I like most any that I have tried but currently my favorites are antelope and whitetail. I haven't had elk in so long I forget what it tasted like but I remember liking it. I used to eat a lot of pheasant and liked it. Duck really seemed to depend on what they had been eating and sometimes you couldn't tell until that first bite. I definitely think that the individual animal varies a lot too and there is a mental aspect to enjoying what you have worked for yourself-they always taste better...to you.
One I could never get to enjoy was woodcock. I used to shoot one occasionally early pheasant hunting in swampy areas. Never could even pretend to enjoy it.