At Stg2+,the Sachs organic did me very well up until a bigger turbo and it finally gave up at 440lbs.
Pretty good for a clutch rated to 400lbs,but the only thing to remember is that organic clutches may not cope well with drag runs,and need a bit of bedding in.
Paddle clutches are generally a pain around town and on hill starts,and SMFs can be a bit knobbly at idle.
I've got a Spec Stg3+ clutch,which is pretty much unbreakable,and if you are into drag runs etc,then it would be a very good choice.