i just got an audiovox 901(i think) for $125 installed a few weeks ago. been working great, but it is pretty dependant on the installer as well i guess
i didnt get the keyless entry option because my car has keyless already, BUT i found out it wont work when the car is on so it is useless if the remote start hasnt finished its 10 minute cycle
i either have to shut down the remote start to use it or just use the key
that might be something to consider if your car is like mine
x2. I installed one in less than an hour in my old Caddy. The module runs about $80, it comes with a remote capable of lock/unlock, trunk pop, and remote start.
Yes, WalMart sells it, but it's still a solid unit.