I bought the 2007 Flow M9's and am quite happy with them, with only a few minor gripes.
Pros: So fast and easy it's almost unfair, no sitting in wet snow to bind up, same great fit every time you lock the highback, reasonable price, low pressure points
Cons: Ratchet and highback parts plastic and can break if you're too rough, not as responsive as two strap bindings, still have to wait on your friends but can still beat em to the first snow :)
Final Thoughts: Once you go flow, you'll never be satisfied with standard bindings again. Newer models have better ratchet parts. The key to owning flows is knowing to dial in your fit BEFORE you hit the slopes. Take some time at home since the ratchets can be hard to manage in the cold and snow. Once you dial in the right fit, you'll get the same great hold every time you snap the highback into place