I may be bias, but i've taken the boat out in stupid weather, got 23knots out of it and when the other classes are breaking around me, Phantoms, Solos, etc. I remind them of the price difference and what they've said in the bar about the Aero not being built well! I don't know where these rumours come from, probably the other builders?
I'm sure RS can give an idea of percentage of boats returned for major issues.
The other good thing about RS is if its a manufacturing issue they normally sort it out.
Just my experience.