Leftys are great. Replaced the Headshok on my Super V 1000SL with a Lefty along with a rear susp arm like on the Jekyll above, a very easy bike to ride.
To the OP, can't persuade my wife to buy yours, she's quite happy with my old full sus bike, doesn't get it at all. Wish I could justify 2 full sus Cannondales for me.
Free bump.