In my mind, AK in early position has everything to do with table dynamics. If I think I've got a loose reputation, I'm making my standard raise (usually 3x) and probably calling a push. I think this gives me the best odds of getting it all in against a hand I dominate. If it's an aggressive table or there is a particular player who tends to attack limpers, then I like a limp-re-raise or limp-push; this is a good way to take down a reasonably sized pot while still generating fold equity against a fair number of hands (pocket pairs) that are slight favorites pre-flop. There's also a good chance one of the medium stacks will push a hand like AQ, especially if I'm known to limp a lot.

Raising to 300 is my default play.