What flows did you try? I wasn't a huge fan of the low end flites but the nxt line is much more responsive. I have atses and they are as responsive as my targas and are super comfortable.
Have you tried getting any of your liners (assuming they are compatible) heat molded? Might be worth a try.
I agree...cheap Flows suck. I have the NXT FRX (freeride) bindings and love them. I also matched them up with some Flow boots, which felt awesome but fell apart after two seasons. Seams totally blew out. My next boots will be heat molded. But that's next season; I'm still out after surgery on my ankle back in November.