That's a tough one
Well, I enjoyed my archer/dagger bosmer assassin, for that stealthy, in your face, infiltrate everywhere and make everyone smile ear to ear feel. There could be 100 guards between me and the poor sod I was gonna hit and it would all account for nothing. The notoriety of it was awesome.
BUT. In the long run, nothing compares to breaking down doors, breaking skulls and loosening teeth with well aimed shield bashes and harrowing decapitations. And then, fighting a dragon on a snowy mountain top. The dragon busting itself hurling fire or ice at you epically, while you just bring up your defense and sit tight behind your shield waiting for it to take a breath again.
While my assassin was like an apparition, landing surprise attacks and overcoming all odds of infiltration, my warrior has none of that. He rushes in and clears a room, making a hell of a racket and a pool of gore; full ironclad heavy armor, a heavy shield and a well balanced blade and still, agility by the buttload, he hacks up everyone and the marks can't do anything about it.
When the poopy hits the fan, do a well timed war cry and pursue the routing foes. Skyrim is not much for facial animations, but, maybe you can just picture that look on your foes face before your sword sweeps his head off his shoulders. He knows he's completely, utterly screwed - and for the next few seconds of his life, no matter of maneuvering will save him. Priceless