I really want to get a 2nd set of bindings that I can get in and out of quick. I have heard mixed reviews on the flows. Should I buck up to the NXT's, or are the M series good? I just want a quality binding for less than $180. Also I wear a size 9 salomom F22 boot, what size should I get in the flows? Large or medium, I'm right in the middle and my boots have a small footprint.