I went from a TBM with a Hooker Prop to a Skat Mag and the same prop. I noticed a small performance improvement in my flatwater riding. It did make a big difference in whitewater though, so like others said I am sure the hookup is better in the surf.
For my new build I thought about going Solas, however since the TBM was on the shelf I am going with that. Also that is my wife's ski. If her or some friends take in some rocks I don't have to worry about the veins since I have a few replacement pump stators on the shelf also.
I would go with Solas or look for someone selling a TBM and upgrading to a mag. You may be able to score one cheap.