If you take the PolarFlo performance testing results here:
http://www.polarflo.com/index.asp?Pa...n=Custom&ID=17
And then look at how the PolarFLO SF compared to other wbs Bill tested here:
http://www.overclockers.com/articles373/basum.asp
Then that puts the PolarFLO TT at roughly the same performance as the slit edge or slightly worse than the MCW5002?
That's with a huge grain of salt of course; would be interesting to take a look at the block