The Pitts and Ultimates are really aerobatic. The steerman is mildly aerobatic but is typically sluggish if built to scale. Its pretty to watch though. Tiger moth is about the same. The Ultimate is the most aerobatic in an RC Biplane,, the Pitts coming in right behind it.
I can fly any of them but,, I dunno, if you are pretty skilled you can probably fly any of them.....

OK I see you mention 1/4 scale... I would go with the Wild Hare Ultimate and a DA 50. Im sure this will get some disgreement but it you are a reasonably skilled pilot this one would be a winner for you. Its easy to fly and is gentle to takeoff and land. And if you want it to be it can be an aewrobatic monster.

If you want a really pretty scale looking Bipe,,, look at the GP Steerman ARF. Its a really pretty bipe and it flies nice with a G26 but like I said its slow and flies scale.