Originally Posted by Overheadsmash
For singles the pro. For doubles the S. The MP is nice, but it is really low powered. I've been experimenting with different string setups in the MP trying to find the right balance.
Like others here (Ross K, Mikeler, etc), I love to try out different sticks and string setups in search of the "holy grail". It's enjoyable.
I demoed the Pro too and it was strung with poly (I do not remember the tension though), For me, the Pro was very lively compared to MP and I sprayed balls several times. I think MP is more consistent than the Pro, though MP is definitely less powerful than the Pro.