Thats a tough question as everyone has a favorite, I can say that the best I had is a 3 way toss-up
tied for first in my book is Dahl Sheep, Muskox, and what was a raindeer steer that was mixed in with some migrating cariobu, the sheep is usally good fare, the few different times I had it, the muskox was a one time occorance, a neighbor gave me some ground rump & leg meat, according to him it was straight nothing else mixed in, made some skillet chille with it and my 3 kids were useing biscuits to wipe out the skillet, was pretty tasty.
The raindeer steer was shot as it was mixed in with some caribou the meat was as extremely tender and very mild.
I know my kids pick caribou over moose, they will eat it if I fix it in curry sauce.
I fix moose potroast useing instant coffie granuals as a pretreatment thats the only way I found that I wont have left overs as my kids arnt very enthused when eating moose, Moose pot roast left overs shred the meat mix with BBQ sauce and make BBQ pizza=YUMMY! or the shredded roast meat use in sloppy joes!
On different tangent marine mammal meat Ive eaten fresh mucktuk off a bowhead whale when fresh they boil it in salt water its called Oonalik pretty good stuff if ever up in eskimo country try Oonalik Im pretty shure you wont be dissapointed, as a note Oonalik is not to be confused with regular raw mucktuk which is allot tougher and not as smooth a taste.
In our corner of Alaska they serve up fish like baked Burbot (we call them mudshark) the liver and eggs have a very rich and tasty flavor.
Sheefish is another that is very good texture and flavor I like it baked, fried, in a chowder as well.