is a great flyer it flew better that his big brother it tracks good on the nife edge not like the 60 size that always was tucking to he's belly and the hover was great too i think ill change the cg a bit since i had to put 4 clicks of up elevator but i was amaze how good it flys better that the 60 size but with the 91 in front just pull out of the hover with autority i think is a good engine for this plane and landings are way more slower and with the flaps settings the hariers are great with no rocking that i can see it was great and the inverted flight require litle down elev. it just great plane and easy to transport