Car Alarm Shops In HOUSTON

I was wondering if anyone had any good experiences with some car alarm shops. I am trying to buy one of those best of the best alarms with remote start, window control, trunk, REALLY FAR range... you know... the good one. I am a fan of going to Best Buy for stuff like that and fear messing something up during install at a small-time shop on the side of the road. Was wondering if anyone had any advice for a cheaper than best buy's prices shop that I could check out, pretty much anywhere in Houston area. Thanks for any help!

(Looking for good installers really.)