Seriously, these things rock. After reading all the junk online about Flow's and their good and (mostly) bad points, I took the plunge and purchased the NXT's anyway. Turns out...to be the BEST thing I ever did.
If you take the time to dial them in correctly, you will never look back
(but should you happen to look back, all you will see is the poor buggers without Flow's sitting down to clip in). Never again will this be me.