I like my 65mm and think its the better option for me. I have more power and clarity then the smaller ones yet not as big and bulky as the 80+mm ones. I did check out the new 50mm Razor the other day and it was pretty sweet. I still would prob grab my 65mm Swarovski out of the safe though when it came time to head to hills.
I have the 20-60x eyepice right now, but I would really like the wide angle 25-50x.