Here's what I'm running:
Infernape @Muscle Band (Prob change that to expert belt.)
252 Atk, 252 Speed, 4HP
Close Combat/Considering T-Punch
This set forms an extremely effective lure+destructor to Aegislash, which funnily enough, people will use their free switch to send in against Ape. They KS, and I predict it, use SD, and OHKO with Fire Punch, w/o hazards. The rest is pretty simple. Close Combat for a "Last Resort" sort of nuke attack, Mach Punch for priority + it gets STAB, Iron Fist, and Muscle Band to hit pretty hard. SD for boosting, and Fire Punch for Fire STAB. It usually wrecks face and takes out 2-3 pokes just SR plus hitting them with the appropriate attack. Max speed allows you to outspeed most threats, and get in two hits before they can even retaliate (Except Scarfers). Most of the time, unless they resist both attacks, two hits plus SR is sufficient to KO any opponent, especially if boosted. If they have a defensive poke that takes more hits, seeing as Ape is a good wallbreaker, they usually fail to stall him out. God I love this guy. Just make sure Talonflame is nowhere to be found before you send him in.