Mine was installed by a stereo shop and it was the first Ridgeline that they had installed since Ridgelines were so new to the market at the time. I was nervous about that but I have had absolutely no problems. I did have to sacrifice my valet key but I haven't really missed it.I think I'm leaning towards the Viper ones.
I'll stop by the shop that did my stereo install for me and see what's they suggest as well. They do remote starts as well.
I'll wait a couple weeks as I'm getting new tires on Wednesday and that's going to suck up quite a bit of cash at the moment.