While I can spend more to get an older Nikon 70-200 VR, I'd rather not spend any more than absolutely necessary right now. I'll probably have a wait a little bit to even get the Sigma (buying a new house takes priority right now). I'm really looking for an in-between option that will get me a 2.8 telephoto now, and that I can resell next year and get a 70-200 VR II. Maybe a used 80-200 AF-S would work for now?
You're right about the sharpness. Just keep reading about how some people don't like it, but none of them state what they are shooting or how they are shooting it.