I play the Off-Set center pedal system (here: http://i168.photobucket.com/albums/u...4-3415_IMG.jpg
) if that's what you mean by "Off Center one". Only 3 pedal makers that I know of that make center pedals. Sonor and Sleishman being the other two. I've played the others as well. Didn't care for the Sonor at all. Sleishman was the first to design a center pedal (1972) to my knowledge, but until last year it basically never made it off the continent of Australia. When I play a single pedal, I play a Yamaha FDDD. When I play a double, I play the Off-Set.