I have an eTrex Legend Blue and it seems to be a decent unit for the price. The only thing I wish I had was a card slot. It works pretty well clipped to a strap. It may lose some accuracy like carriedthat, but when you pick it back up to look at the screen you can see the numbers stabilize down pretty quick.
I don't like to turn it on and off because it takes a bit long to achieve lock on (or I'm too impatient.) Of course, I haven't taken it out on multi-day hikes yet so battery life hasn't been an issue for me. I use it alot in my car tethered to my Dell Axim running Tom Tom. Excellent reception in there using the stock antenna.
Some nice cable stuff here, including additional antennas:
http://www.pc-mobile.net/gpsant.htm