So is there any reason to go out of my way to get sata 6GB/s if I'm not using an SSD?
Also I would definately wait if it meant a PCI express x16 3.0 was coming out. wikipedia says the spec is coming out really soon:
"In August 2007, PCI-SIG announced that PCI Express 3.0 will carry a bit rate of 8 gigatransfers per second. The final specification is due in the second quarter of 2010 and will be backwards compatible with existing PCIe implementations."
Edit: My budget is between $1000 and $2000, I usually opt for quality brands and value. I tend to avoid really high end parts because you get diminishing returns the more you pay after a point.
I'd probably pay $180 - $300 for a video card(s). Same for processor.
With a $2000 budget, I'd consider paying spending at least $400 on a GPU. Anyway, I'd don't think there is anything worth waiting for right now. Between the i5-750, i7-930, 1055T, and 1090T, there are so many sweet and affordable options right now. Pick you poison, have fun, and stop over-thinking, would be my humble advice.