I've played depressingly few of the games on your list. In fact, apart from all the bethesda games the only other game I've played is Dragon Age. So I suppose I have to go for Bethesda simply because thats all I know haha.
I can't help but feel apprehensive as to whether or not it can compare with previous titles by Kojima. I loved MGS simply because the mixture of stealth and action was not really done, or done as well by anyone else. Turning it into a gory hack and slash seems like a bad move to me...