tad - The comp shocks come with clips. I don't like them, except as a backup measure. It is far easier to adjust preload with threads than clips - also far more precise. You never run out of threads. . .
I used composit CVD's quite a bit in stock - they work quite well. One nice thing with them is that if they break, and you're using a one-way, you won't lose the outdrive, which you would do if you broke an alum CVD. . .been there, done that.
They're lighter than alum or steel, so less rotating mass meaning somewhat quicker acceleration.