I have the Scytek 5000rs and I love that thing... Running 1 year strong now with no problems... the Remote start is nice, I finally have keyless entry, and its quality for the price... Just find a good installer, I got mine installed for like $200...
I was iffy about getting a no-name brand, but this one works Great! Only complaints are that the range is not great, but "enough" - say you park your car at work or school and the building is near, it'll work fine...just any further and no luck...
Also, I know theres a way to do this, but theres no silent arming/disarming ... it uses my loud horn and its annoying...