I have killed deer every year for the last 20, and I have had to clean them all, and for me, the Buck Crosslock hunting folder combo with the hook blade is what I have when I go to the woods, for 3 years now. The Crosslock original was for cops/paramedics, and the hook was big, for cutting seat belts off of accident victims, but the hunter's hook is smaller and designed for slitting game. The hook allows you to open a whitetail up for field dressing, without nicking anything messy or getting your hand dirty, as easily as opening a zipper. The blade is pretty nice, too. I think it cost $40-something.
Rant: I'd hate to lose a real valuable knife in the woods, much less a utility hunting knife, so why do most knife makers assume hunters want CAMO knives? Have they ever dropped something in the woods between the stand and the truck and had to go look for it? Camo knives suck - give me something easier to find if I drop it, like walnut 'n brass, black, orange, or blue, even!(/rant)