All I ride are quads but loved twins back in the day. The quad , to me, has more drive and hold than the twin which is much more loose and likes to slide out on hard bottoms or vertical releases or gives you that skatey feel on the rear when in some solid surf. The quad can do the same if on a narrow board with very small rears. If riding a wide board with good volume small rears can give you great snap in turns with the volume keeping the board stable and not getting to loose on the rear. You just have to play with different set ups to see what works best for you on different boards. The twin works great in small surf and is super manuverable in big when you get used to the loose rear.