I'm thinking of implementing some kind of HA using a dedicated controller rather than using a server for right now. I've seen lots of things around here and other places with recommendations of the ISY and Vera and other controllers. I'd also like to have some security in the system, but overall I don't want to spend a lot of money...yet. I know there's the Elk and HAI systems, but I don't know if that would be overkill (or my sweet spot). I haven't dedicated myself to a technology (UPB, Insteon, Z-Wave), but I'm only really looking at managing temp and power (with security down the line). Are there any good comparisons of the stand-alone controllers?