One stat down, 5 more to go. I don't think I'll need pokerus. The horde training is the way to go, especially if you have a lot of pokemon to learn that stat. With exp share on I can train 4 at a time (need a spot for the sweeper and a Combee). I just pass the Macho Brace between pokemon to distribute it evenly.
Gained a few levels doing this too so it's killing two birds.