I've been using:
252 hp / 4 Atk / 252 Speed
on the OU ladder and I have to say I'm in love with it. It's one of those few Pokemon that has a use early, mid, and late game (not just sacrificial use either) by scouting (U-turn) early game, acting as a pivot mid game (252 hp + intimidate allows it to switch into a ton of threats), and cleaning up late game (SD + EQ / SE).
I like Pokemon that are versatile and useful to me throughout a match, and this set basically exemplifies that.