I've had both.
I like the Flow NXT-AT's better than the Cinch CTS. The Cinches aren't bad bindings, but the Flows have less moving parts. The Cinches are more straightforward to set up, but the Flow NXT and M series are pretty easy to adjust as well.
The Cinch is the Rube Goldberg version of the Flow. I have nothing bad to say about their performance, but they are overly elaborate for what they have to accomplish. More parts = more that can go wrong.
"Never attribute to malice that which can be adequately explained by stupidity."
10/11 - 24, Smote on Feb 13