I have a Case Finn that I am really fond of, but I don't know about Kabar as a brand because I have never owned one. (Some people on the forums swear by them, though.) They both seem like decent knives. And, as far as field dressing a deer, both of these knives are very much equipped for it. There was a man on the forums that field dressed an alligator with a Case Peanut and several more that have done the same to some deer.
Buck Woodsman, 7.75" long overall, comes with a nice leather sheath, and it was made with Buck's legendary 420HC steel that takes an edge and keeps it.
Kabar Little Finn, 7" long, just says stainless steel, so I am guessing its 440c, comes with a sheath I don't know anything about. Who knows, that could be the knife for you, I'd go with the Buck myself, only because I have owned Buck before and I know they are reliable for anything you put them through. Hope this helps, Jerry.