I was given a Garmin Nuvi 250 for Christmas last year and was surprised how much I used it.
After my car was broken into, I replaced the 250 with a 265T. The upgraded unit had slightly different software which made it easier to use, as well as FM radio to receive traffic reports and bluetooth to act as a handsfree unit for the cell phone.
Many of the POI that are included with the 265T have a phone number and now all I have to do is press the phone number on the unit, and my blackberry dials out!
I bought the 265T on sale at Best Buy for under $300. Tiger Direct has one of the units on sale at the moment, I think.