Make sure the software you are planning to use supports the LTe. I found out after I bought my LTe that the software I was using (Elve) didn't support it. I switched to Haiku/Haiku Helper but if Elve had not become untenable anyway, I would have been sad about my purchase.
I have UPB/LTe/Haiku/Haiku Helper/iPad/iPhone. It works pretty well and wasn't too painful to setup but even an LTe is expensive (add power supply, battery, keypad, and UPB interface and you're over $1000) compared to a Vera or ISY. Also, Haiku/Haiku Helper requires non-trivial software skills if you want to expand it (out-of-the box satisfied most of my needs).
If 'minimal" is your interest, it might be worth take a look at solutions other then an HAI/ELK controller. There's a lot to be said for implementing different solutions for different problem. There are a lot of good point solutions like Sonos for whole house audio and Roomie Remote for AV that are powerful and much easier to implement if you are willing to give up the dream of an integrated solution.