Yeah the 66 might be good. NEw damping system is suppost to be better than hsvc (that in and of itself would be incredible). The system also allows for less oil which in turn saves a lot of weight. I am not 100% sure but the 888 has bigger stanchions...is the 66 doing the same?
I think this is gonna be a killer fork, I just hope they leave off the ETA and/or improve it to a usable amount of travel. Make it so it can be a 4 in or 6 in fork, both setting usable for REAL riding.