"Top self GPS unit"4.5 starson by casecorgis
Pros: Feature rich, easy to use.
Cons: Expensive, weighs more than similar other units.
Summary: This is my 3rd GPS unit. The first two were Magellan (the eXplorist 500 and Meridian Gold). I held off buying a Garmin simply because you couldn't upgrade the memory. That has been solved with the "Cx, and CSx" series of Garmins. This unit was easy to use right out of the box. I use it primarily for Geocaching. I've found it to very accurate and it does have a quick satellite lock time. The eXplorist 500 is also real good for Geocaching, but has much smaller display and buttons than I like. While this unit does weigh more than most others like it, I like the feel, weight and balance.
I also like the fact that you can put the unit in a backpack and run an external antenna out and clip it to the backpack.
Connectivity is via hi-speed USB. The Garmin is powered by USB while connected saving your batteries. I can't comment on how long the batteries last because I haven't timed them, but I do know that my rechargeables last a couple of weekends of Geocaching easily.
There are many very good GPS units out there, but this one is top shelf in my books. The single biggest con I would have to say is price. It is easily at the top of the price range.