Here's my set, I like to use this one:
252 atk 252 speed 4 hp
Return for STAB, crunch for ghosts, and ice+electric for extra coverage.
My opinion: While this may not have the best stats, it was still a good idea competitively. It has flaws, but it's still good. Under the right hands, this thing can do very well. Plus, it amazing in-game, it's helpful with beating the game.
FC: 5043 1366 9389
I claimed Deoxys, and serebiiforums is my homepage. Good luck claiming it.