I use Magellan Roadmate USA, IMO it's much better then all the others, + it has free traffic updates, 3D buildings and coupons available for certain area's of interest as your driving. It also has a built in music player and will soften the sound OR simply mute the sound (your choice) as you get closer to a turning point or location of destination.
A ton of other nice features as well and I've owned all the High priced ones out there with the exception of Tom Tom.