Hey cootertwo ..what did your edge weigh with the 120fs . I have a Saito 120 with a pitts muffler and would like an arf edge to put it on , but I dont want it to fly like a heave plane I want it be 3-D ......
Tim I can tell you off the bat that any of the VF planes are not full on 3 D monsters. yes they can perform many maneuvers that can be considered 3D but forget the high alpha stuff with them. They are designed to be aerobatic thoroghbreds. You can run nice IMAC patterns with them and do blenders, snaps, and torque rolls.
My personal preference is a plane be capable of blenders, flat spins, knife edges and torque rolls and I can consider it a 3D capable machine.
Think the 120 might be a tad heavy but I have no exp with it. My 58" version has a Saito 91 and it was a great combo with ample power. Never flew more than 1/4 throttle for most stuff then cranked it for the uplines.
good luck
matt