I started with the Burton step-in system which was quite crappy and went directly into Flow's so I don't have any experience with traditional strap bindings.
None of the Flow's that I've owned have the toe strap - I think this years models are the first to offer it.
I put a pair of 2012 NXT-FRX bindings on my new T.Rice about a week ago and it took me about 20 minutes to get them in the ball park at home and maybe another 10 minutes of adjustment once I got to the hill and made a few runs. I think there's YouTube videos for setting them up if you need more info.
This may be the wrong thread for discussing bindings so I apologize to the Mods if I'm out of line.