train a lot of people on the LT40,I like the FX46 OS engine,for now that's a lot of engine but as you progress you'll enjoy the extra power,don't need to fly wide open anyway,also build the plane as per prints,when you start changing the design you'll also change the handling of the plane,I've flown around 20 years and still enjoy flying a trainer,also fly laser,edge540,ultimate bipe,extra300,and many more planes,no mater how good or how many years you fly,there's day you just can't beat the ole trainer.