Your Guide to EV training!

I apologize that I didn't read the thread, but I didn't see the original post updated with this info, so I thought I'd comment.

Using the EXP Share while EV training allows the EVs earned in battle to be awarded both to the Pokemon that K/Os the opponent and the Pokemon holding the item. For example, if my Horsea has the EXP Share equipped and my Ampharos kills a Poliwhirl, both Ampharos and Horsea get 2 Speed EVs. The downside is that EV-increasing items and statuses cannot be manipulated by the EXP Share Pokemon to boost EVs earned; to get the increased amount one would have to lead with the EV training Pokemon and switch to the sweeper.

Also, Rare Candies are not as bad as you think. While they don't take EVs into account when leveling, they're safe to use once all EVs have been earned on a Pokemon.

All of this information is located in Serebii's EV Guide.