I'm far from a GPS expert but this little guy blows my mind for the price...
http://www.amazon.com/Lowrance-Multimedia-...m/dp/B000GSQDPM
I had a chance to play around with it at the store and what I appeciated most about it was the SD card slot. Drive to your location with the included map and pop in a Navionics chip to navigate the lake. Track your routes on the water, mark waypoints/icons etc. A big bonus for me as I have already invested in the Lowrance/Navionics chips for the boat.
It's smaller and lighter with a bigger screen than the 76 series Garmin plus it has a built in mp3 player and picture viewer.
One of the only things I didn't like about my Garmin 76 was the shape. To keep a signal it had to be in the window and because of it's height, it had to be near the edge of the dash.
If I was buying another hand held, this would probably be it.
-Brian