I have the Hirobo Sukhoi 45 ARF, was going to buy the eXtra

-Needed to reinforce Landing Gear
-Glass Cowl is a little weak
-didnt use supplied engine mount or tank

Besides that...

Great Looks, Great flyer, no bad tendencies.

Inverted Flat spins were never so easy.

Very Happy with it, BUT REINFORCE LANDING GEAR.

Fpw