I have the 27% Extra 260 with a DA 50 on the nose, and it does NOT suffer from high wing loading. It actually has very docile low speed handling, and lands very nice. Most of these "rumors" of poor performance on this airframe with a 50cc engine are coming from people who dont have a clue, because they've never flown it. This aircraft probably has the widest range of good engines around, since it will fly very nice with anything from an OS 1.60, to a Moki 2.10, Saito 2.20, right on up to the DA 50. As far as the airframe sufering from vibration... nonsense. It suffers no more problems than any other ARF airframe with a gasser on the nose. There's certain reinforcements that should be done on ALL of them, and ALL of them should be checked periodically for signs of damage.