Camera Choice

I think that I have finally narrowed it down to either a Nikon D300s, D700 or a Canon EOS 7D. Any of these three options will allow me to shoot at the faster frame rate that I will need for the majority of the the sports situations that I find myself shooting these days. It is looking like it will take me a while to pony up the dough  and make the transition. Tax return here I come. I am still at odds about whether or not I am really in need of a Full frame sensor DLSR. I do like the idea but it is hard to justify its expense to myself right this second.