Just want to put my 2 cents in.
I have the stage 2 on my RS right now and had it on there for about a year 1 1/2. I put it in to hold the power of my turbo RS running 6.6psi. and that it did. The pedal effort is very little stiffer then stock.
Clutch chadder, hot or cold you get it every time starting off in first. It being a Kevlar disc, it dosen't like to be slipped. With AWD cars you need to slip the clutch a little to get a good launch at say a drag strip or the start of a an auto-x. This clutch dosen't like it and it will slip untill you let it cool down. Not for to long about 15 mins.