The cool thing about Garmin is that if you call them, they will upgrade your new unit with new maps. The 2009 maps are out, but I bought a unit on sale that had 2008 maps, but one quick phone conversation and the update was available from the mygarmin website. Be careful with other brand's units on sale though, as map updates can be $80-100.
Another great value is the Garmin Nuvi 500, for those wanting to step up.
Its a bright screen waterproof unit, and so also makes a great motorcycle GPS. In addition to road maps, it also has topographical maps for offroad riding/hiking.
And btw, by waterproof, they don't mean water resistant. You can use it submerged in an aquarium as seen here:
Its available on ebay right now for $370 free shipping. Search slickdeals.net for how to use the Microsoft Live 25% off on ebay purchases (you have to have a paypal account, but they are easy to set up).
Total shipped no tax is $277, which is a much better deal than the Zumo niche product they sell.