I just moved from Cinches CTS to NXT-AT's. Cinches are more straightforward to dial in, but the Flow is lighter and has less moving parts.
The Cinch highback doesn't come down all the way, it's like a clam-shell action - the straps go slightly up and the highback comes slightly down when it's opened. You need to point your toe down and slip into it. I've never had a problem with the cable coming out at all.
Either one is going to take some playing to get used to and become proficient at slipping in and out. Both hold on nice and tight.
"Never attribute to malice that which can be adequately explained by stupidity."
10/11 - 24, Smote on Feb 13