Rock Polish Imo.
Rock Polish was used on one of the Gen 5 Smogon Torterra Sets, a a lategame sweeper- it gave it the extra speed necessary to sweep when the opponent was weakened, with high powered attacks like Wood Hammer and Earthquake. Even with a paltry base 56 speed, a single Rock Polish gives it the ability to outspeed Choice Scarf users like: Braviary, Sawk, Gardevoir, Rotom-S, and Rotom-F .As a quote from Smogon;
>Finally, Curse could be used, but Torterra is so slow it's easy to revenge kill with common Ice-type coverage or simply a strong super effective move from a faster opponent.
