I use the Paragon line of spinners. I've cracked several Tru Turns and Revolutions, but so far the Paragon's have shown absolutely no problems. I also use Pete's CF spinners, but because of the slick backing plates I have resorted to countersinking the back of the spinner plate and using #10 fine-thead decking screws into the prop to prevent slippage, and they are very solidly attached once the prop nut is tightened. I've never broken a screw in this arrangement either.

Hope this helps.