Nothing wrong with the Irvine. Edible has a fixation with the West. But once you start buying engines,we all do, you'll find out your favourites. Irvine will be up there.Just try a range of different props for your best performance. Personally for 3D I find on the 52, yes I do own one it's now over 2 years old, a 12.25 x 3.75 APC prop is excellent. Fuel used now is 10% synth, Duraglo that extra nitro just aids recovery from low to high throttle.