If you don't need it to name streets (ie it says "turn left in 1000 feet," instead of "turn left at Elm") then look at the Mio 310x.
It's $160-200, 3.5" screen, 3-hour battery, Maps of US preloaded, MP3 player, and you can actually use it as a PDA if you want to get techie with it - see
http://www.gpspassion.com/forumsen/forum.asp?FORUM_ID=37
For the price, it's just fantastic.
I was shopping for car speakers yesterday, and it led me right to several hole-in-the-wall stores I would NEVER have found on my own. It's literally the best $200 I've ever spent on electronics. And cheap enough that I can still "justify" some Focals for the car.
