Performance depends upon several factors, wing loading, drag, power output, balance, moment arm and many other factors. The best performance on this model is with a Tee Dee or Norvel engine however a Black Widow comes in a close second. You may find that on low power engines the plane will float and not perform up to your expectations however we have NEVER recieved a complaint on this line of models. We have heard from modelers who used a Black Widow and they were satified with it's performance and feared that a more powerful engine would be to fast for them to handle.
Larry