Well my pro brush came today, It came with the cheap budget fans in it, I hooked it all up (why do brushes, in fact anything not come ready to go, had to put pipes on it and nick a Y piece off another brush :

) and the fans did not seem to.....well....fan enough!! My auto brush fanned brilliantly. So it came with holes pre drilled at 12mm to fit other better fans in I bought, So decided to fit them, the holes were just too small so had to drill them out.
I also pulled a line of bristles out so they can actually fan. Tomorrow will be the tester. I wish they would make brushes ready to go properly with fans, tubing etc.
I think from using the auto brush, the fans are in the wrong place ,I do not think they will be as effective being in the centre of the brush like pencils, the autobrush has them near to the top with the second row in of bristles removed all but the last 3 on each end. I would of moved mine there on new brush, but there are already 4 holes in it So was not enough space to drill any more.
Oh and the brush is 12", superlites are 10". So when comparing weights this needs to be taken into account.