none of these would make a good hunting blade. I have the Seal Pup, Becker, Kabar and Nighthawk and they are all too long, too fat or both to make a good skinner. I agree with the op, a belly is good, as is edge retention. The RAT5/RC5 is .25 inches thick... feels like a brick. I have one and love it for a beater knife, chopping wood etc but for skinning, not a good knife. The Seal Pup you can get away with but for its intended purpose you can do better for the money. AUS8's edge retention sucks in comparison to other 70 dollar knives, and other knives can offer much more solid control. AG Russel is a good choice, as is the Buck Vantage Pro. I think the RC5 has about as big a belly as you are going to get on ANY knife, short of a Kukri or other recurve design. Also shoot a PM to Koyote, he does an awesome short leuku that is probably within your price range-massive belly, great edge retention (15N20 steel) and scary sharp.