wait till the day after thanksgiving. Got our tomtom for $80 at Target - saw it at radioshack for $280 the same day. Like someone said, its VERY easy to make it waterproof.
Garmin Zumo 660 - as someone already posted, a little pricey, but I got it for 20% off with my AMA discount soon after they were released so it only cost me $50 to upgrade from the Zumo550 that I sold on eBay.
Honestly, I use my Iphone and I love it. I use an app called motionX GPS Drive. It was a free download and it costs $25 a year for the service. Gives me turn by turn directions while I listen to my tunes. Gives me the best route based on traffic, which is important in southern california.
I use a Magellan Roadmate 1475T, get traffic free for life, I like the unit can't remember exactly what I paid for it but under $200.00 at costco, and when it is in the car I use my Windows mobile PPC with Garmin, I prefer the Garmin but in their wisdom they stopped supporting WM, pisses me off, but that's another story.
Terry