And lastly - I know retail and wholesale prices for all these switches, and SA tends to be 1/2 to 1/3 the price of the HAI or PCS switches.
And actually, I'll take that back - there's one user of these forums that will go on about only using GenII devices because he doesn't believe in fixing the noise problems but wants something that can push through them. He had a noisy range and pool pump and didn't believe in fixing the noise source.
As long as I've been called out... With all due respect, and I do mean that honestly, you tell others to watch their tone when English isn't even their first language (pretty obvious from their location and grammar) but I could make a pretty big deal about your tone in this comment. If I didn't know you as well as I do I could easily be very offended and take serious issue with this comment. I've been around here, and UPB even longer than you have and you should really have some facts before making statements like this. It comes across very demeaning while advancing your 'apparent' pro SAI agenda.
I think everyone needs to recognize that automation in general and specifically UPB, a powerline protocol is not black and white. You simply cannot make generalizations as everybody essentially has a unique environment and will experience different issues even with the same exact equipment. The powerline absolutely SUCKS as a transport medium and it keeps getting worse as everyone is trying to use it to transport signals and more and more devices are getting attached both inside and outside the home that potentially generate noise, etc. I have UPB devices from SAI, HAI and PCS as well as Centralite Jetstream. I can tell you I would recommend any of the products and companies in general so that is not really a factor. But based on MY experience I would choose to use HAI or PCS products over SAI at every turn.
First, there is simply NOT a huge difference in price between the entry HAI and SAI dimmers. In fact at retail I can go right now and purchase HAI dimmers even LESS than SAI. I won't even discuss wholesale prices. The only argument you can make is at the entry level the SAI switch is rated 900W vs 600W before derating. So I'm not sure where this HAI is 1/2 to 1/3 more is coming from. PCS has always been the 'elite' in UPB and demanded a higher price. I'm not even going to get into the whole feature sets/LED colors/programming/etc issues.
But the real thing I want to address is the comment that I am essentially 'lazy' and didn't want to address the problem. First and foremost I had indeed spent countless hours with meters/software, etc doing extensive testing of every single circuit, outlet and switch location in my house. I have bad home genetics and before even a single device went in I knew I had poor signal propagation. Nonetheless back at that time 2005/6 I made the decision to try SAI equipment. It had very mixed results. I did try couplers in various locations, etc, etc. It worked 'ok' for the time. Then yes a 220v electric cooktop was added into the mix and at certain settings it wreaked havoc with the system. NOTHING worked. There was pretty much a constant 22+ level of noise when it was on a certain setting. I worked with SAI engineers at the time and they had NOTHING to offer. I was even told at one point they purchased the guts of the appliance and they were going to custom build a filter to try. That NEVER happened. At the time NOBODY had any filters. inductors, etc that would work on a 220v 40a circuit. And even if they did, it would have been a good bit of work to install something that large (I won't get into those details). SAI had no answers, but I guess I was lazy and didn't believe in finding and fixing the noise (sorry, I know that was poor sarcastic tone!) The later added variable speed pool pump, hell, even a basic $20 motion outdoor flood also wreaked havoc on the system.
After extensive conversations with PCS at EHX shows, etc. we talked about the new Gen II firmware they developed and they were convinced from their engineering and testing that it would work where SAI did not. They were so sure they gave me a Gen II PIM and switch to test it. I took a SAI switch that worked maybe 10-20% of the time and just replaced it with the PCS switch. Initially I just used the new PIM manually via Upstart. Guess what - it actually now worked 95% or more of the time. Is that smoke and mirrors? Magic? Call it what you want but the bottom line was Gen II worked where Gen I failed miserably. Later, I added an SPR and it brought reliability up to high 90 range.
And I won't elaborate here as its all documented in various posts over the years, but I've also had > 10 SAI switches fail on me. Surges? Who knows, but I know I lost SAI switches in same multigang boxes as others and I have not lost a single HAI or PCS switch. Sure SAI was great and replaced them and had theories of bad diodes, etc - who knows and maybe it was just me, but it was another negative experience with SAI.
Do I bash SAI, absolutely not - it can be a fine device in the right (and even many) situation. But the bottom line for ME is I had a technology in Gen II that worked where Gen I didn't. Could I have spent a ton more hours and even dollars trying to build filters, yada, yada - maybe - but why? Automation should SIMPLIFY your life, not complicate it and make you crazy trying to go around patching things to try to get something to work. I could do that with 70's x10 technology.
If you have clean powerlines (at least for now) and you like what SAI offers - go for it, but IMHO there is no reason to use Gen I devices when Gen II will do everything Gen I does AND give you the insurance against future noise issues like I have seen and I have seen several times here as well. Like was stated, - if you like SAI, why not get Web Mountain with Gen II? SAI are the only ones sticking to their guns that Gen II+ is not necessary. I would simply not sell or install any more Gen I devices.
Anyway, everyone should choose what works for them based on their own requirements and situation, but please don't minimize MY issues, time and experience. And even though my UPB is largely stable, I would replace them with a good Zigbee system in a heartbeat one there is a quality switch (to my standards).
Oh, and speaking of LED, I now have 3 rooms with either 5 or 6 can lights with new LED PAR30 bulbs. 2 of the rooms are on SAI dimmers and the light sometimes 'dance' around, changing brightness, etc. The other room is on a Jetsream/Zigbee switch and it is rock solid perfect. They are all the same exact light bulb. Is it a coincidence the SAI UPB circuits have a problem? I don't know, one of these days I will replace one of the rooms SAI switch with a HAI or PCS and see what happens.