I've just gotten the hang of mine, all it needed was more elevator throw and a 3/4 to full throttle launch, the recommended half throttle launch was inadequate for this heavily loaded airplane (3S 1000mAh battery is heavy). It's a fast little thing, and everyone at the field loves it. Nobody has seen a little plane like this handle the wind so well, but that all comes down to being relatively streamlined and having a high wing loading. Wind that bounces a stabilized UMX Mustang around doesn't even phase my Baby Bugatti. It's actually better to fly on a windy day because you can slow it down a lot more for the landing.
I'm going to buy an RS2205 and build a mini Mustang or Corsair, and I want to try it out on this plane with the 6x4. My concern is the weight, it's a 30g motor vs the 18g motor on there now. Between the big battery, the paint and the hot glue from the repairs my plane is already quite overweight.