Which Bindings?

I got my Super Suctions last year. They were really tight at first but then they were great... for about 2 months. I hit my first growth spurt and my foot size went from 8 1/2-9 to 10 in less than a year. They are now painful to wear for more than a short run. I don't have alot of cash to shell out, but want a more performance oriented binding with more support up high. What would be a good choice? I was thinking of the HIghbacks, but don't know how easy it is to mount them to an Obrien Board (Cobe 137, love it, love it, love it!). Since I got this board last year, over one summer I am a small amount away from clearing the wake. I am getting over 2 1/2 feet of air, and cutting harder than I ever though I would. THis board is just awesome. I can't wait to try out Cobe's new board when I outgrow this one. Anyway. Back to the bindings. Which other bindings would be good? Thanks.