Angus B.... I've been using the MSC prop for a year, like it alot. Use one of Chips new woodies on my DV (22x8) and I'm going to Buy three more of the same from Chip. I think it is a better prop for 3D than the MSC. I picked up about 300 rpm with the CHP prop. If you don't have Chips " Quite Pipe" yet I'd highly recommend it also. I think it adds power and performance. And it is Quite. Good luck with your choice.
greg