I think the SFA stick is, for the most part, a piece of crap. The diagonals are awful, and the buttons have a ridiculous amount of travel, and really don't feel all that sturdy anyway. About half the buttons in mine were loose in the sockets and could be spun freely.
I've got a pair of Tekken 5 sticks and love 'em, though I mostly use them for shooters, seeing as I'm completely horrible at fighters.