RE: GP Waco?
RCBOATMANIAC - It's all comes down to your flying style. Ihad the SAITOFG-20 4Spetrol in it which gave it nice scale speed and performance, and Inow have the MVVS30cc Petrol which made it a true powerful "fun machine"...
The DLE30cc will provide you with similar power figures, so prepere yourself for almost unlimited vertical climb and the power to do whatever you want.
Word of warning tough - if you are using powerful engine, replace all the metal fittings for the "N Struts" as they will snap, with thicker ones.
Eran