I have two Uniden 520XL's. They're cheep 60 bucks and have been reliable.
The key thing to remember is that a vehicle is a HORRIBLE platform for a radio station. There is a ton of radio interference from wiring, ignition and mostly the electronic fuel pump. All the installation tips you read about on the net like using exactly 19 feet of co-ax, a power wire straight to the battery ect, are all just a waste of time because a vehicle makes so much RF noise anyways.
Any sort of noise canceling features are good to have, you'll probably have them switched on most of the time.