I just replaced my old eTrex Legend with an Oregon 600. I bought mine new from REI because we are members there and get 10% dividends each year, so that's a quick $40 right there. I decided against getting the t model because I downloaded my topo maps from gpsfiledepot.com, and they work great for me. I didn't feel that I needed to get the 650 model because I don't need a camera on my GPSr, as my personal preference is to use my Canon to take pics while I'm hiking anyway. (Another hobby of mine...)
I just went out today with my fiancé, and we hit a few urban spots just to introduce her to geocaching, and my 600 worked great. Accuracy was great, ease of use is fantastic. I love the touch screen! I can't wait until we can go up to Blue Ridge and do some hiking/geocaching within the next couple weeks or so and see how it works on the trail.
