I'm not sure I'd call myself a guru, but I can provide a little input. I have a Garmin E-trex Legend, which has more memory than the standard E-trex. The advantage of more memory is that you can download map source topo, marine, or city maps, which have more detail than the base map. This probably isn't that important if your hunting, but would be better if you plan to use the Gps in the city, or on the lake.
I use mine for boating, hunting and city, and commonly attach the legend to my laptop while in the city. This gives me a 15" color display, and is very handy when traveling to a city I'm not familiar with, but the rental car people look at me kinda funny when they ask if I need directions, and then notice the GPS on the dash and the laptop in the passenger seat.
I guess the biggest thing, no matter what GPS you buy, is to use the unit frequently so as to learn the capabilities, familiarize yourself with the functionality, and generally learn to trust and understand what your looking at. Also understand that while the unit works 99% of the time, on occasion, in heavy woods or bad weather where clouds hide a clear view of the sky, the GPS may not be able to track the satellites. I still take my compass just in case.
The Garmin is a very good unit, and the only downside I have is that battery life could be better, and is around 14 hours.