Depends on what all features you want. Mapping? Compass that works with out moving? Auto tracking? Verbal turn commands? Your budget is the limiting factor. I've seen the next generation of my Garmin eTrex Ledgend C on the market with a package deal for around the price you are looking for. The up grades include a micro card that has alot more memory than mine. If you are looking for a hand held be sure you can use it with one hand. Mine is easy to use once you learn it.
If all you wanna do is mark the spot of your fishing hole, tree stand, last blood spot or trap, and find your way back to it one of the less expensive ones will do.
I find mine invaluable when traveling and trying to find a specific place. When I was in Maine a few weeks ago I was able to use my Garmin to choose a reasturant from a preloaded data base based on cuisine, hit find, and it drew me a map right to it and told me when and which direction to turn. When I use it deer hunting I mark my stand so I can always keep myself oriented when looking for a blood trail. I can measure the distance from where I hit the deer to the stand, mark individual blood spots and measure between the spots and find my way back to the last spot.
Anyway, its a great tool and a fun toy.
The 'Bonker