I fly a slipstream MS w/30cc and love it! Own lots of other. similar size planes and the quality is on the higher end. Issues? Having really "stressed" it out I bend the landing gear on hard landings (bends back, no damage to airframe), bent the wing tube on a high speed wall (plane now comes w/cf tube which is workng just fine) and had the firewall loosen (put fiberglass over the corners).

So the only issue I've really had is the firewall needs to be pinned (common for this size) or have a piece of fiberglass put over it when using a 30cc engine.

It does fly nice!