I have seen the fusion fly many times at Huckfest by some of the best pilots and it was sick... but same goes for the AM YAK.
My experience moving from smaller planes to larger planes, everything becomes less work.
(if the plane is built light)
It seems like the 30%+ planes are just smoother, are WAY less dependent on good weather to fly well, meaning that 5 - 15 mph winds really don't have to much effect on the big dogs, and the bigger planes seem to instill A lot more confidence.
For me, bigger = more stable and more confidence.
(And I agree with neo 33% fly 10x better than 30%)
I'm up to 35% now, and personally I hate to fly anything under 30% now... it just isn't as much fun....(And I'm not dogging smaller planes... I just don't have the confidence I do with the biggers ones.)
That being said, the fusion seems to be the BOMB when it comes to slimer planes.
So... there's my unprofessional personal opinion.