I've flown just over 100 hours in the Bolkow Junior, which has a centre stick. The cockpit is an ergonomic nightmare! There are duplicated throttles at the far left and right of the panel, but you have to reach across with your throttle-hand to get to the carb-heat, mixture, trim and brakes, which are all in the middle of the panel! It's a brilliant touring aircraft for one person, though: you can chuck all your stuff on the right-hand seat, and can put the map conveniently on your knee. I don't find the stick position particularly good for aeros, however.