We recently installed the NGR slipper our 1098 project bike.
The NGR has a feel like no other.
It is not as easy of a clutch pull as the Surflex, but it has a very precise feel to it that no other slipper clutch that I have tried.
It comes with an assortment of "helper springs" so you can adjust slipping. It has a removable cover on the pressure plate that hides and protects the springs from damage. It does not "pulse" back to your lever like many slipepr clutches do. It just works and does not make a fuss.
NGRSlipperClutch w/ Plates