somehow my post didn't show up here. i was gushing about my ultrasport 60 purchase and it didn't make it. well anyway, i recently acquired an US 60 with retracts and an OS .61 RF (rear exhaust). it flies very fast, requires no input upright or inverted. the same with the landings and takeoffs. it just simply waits for a command. very long smooth takeoffs. great sportplane.