I have a Garmin 330 (I think). Its the flat screen unit. It does great! I serve legal documents as a side business and it has never let me down. We drove from WI to FL and never opened a map one time from my house all the way to my brother in laws, it took us right to their door. It tells you to take the lane changes and all. I got the model with the built in MP3 player and hooked up a FM radio converter to it so it would play the music through the car stereo. It takes an SD card or you can load music into the internal memory. I recommend them to anyone traveling into unknown territory.

Huck