did you ever use the tilton?My quick input on clutches:
HKS Triple - THE WORST CLUTCH EVER TO DRIVE STOP AND GO. It will hold the power, but it is a pain in the ass to drive. The point at which it grabs is always changing.
Blitz Twin- Very drivable. It does make a good amount of chatter when disengaged, but it is probably the easiest multi-plate clutch to drive that I have experienced. It can hold power, but it will eventually go when you are doing alot of drag racing.
Carbonetic CC - Chatters similar to the Blitz, but is easy to drive (behind the RPS and Blitz). It will hold 700+ HP, but I did not drag race using this clutch so I have no input there.
RPS CC - Drivabilty is only behind the Blitz. There are some issues with failures, but mine has worked fine so far (knocking on wood). It seems like the RPS failures seem to be hit or miss, some last forever so fail immediately (similar to the AEM EMS). I personally have punished this clutch at the track with no issues, hell it takes a full night of 1.34 - 1.37 60' lauches and keeps going.
HPF Feramic - I have not personally driven this clutch, but I have heard many horror stories of people "welding" the clutch to the flywheel when trying to slip for drag racing.
My personal choice is the RPS C/C, but I can see why people would shy away from the clutch at this time with the recent batches of failures.