The 80-200 AF-D is (imho) the best value for money, it depends,as the man above says, how much you want to spend.....
Yeah obviously i would state a budget but to be honest, if a lens is sound for a great price compared to others then im interested!
Ive used mainly sigma stuff and to be honest their zooms ive found a little soft... but then their 70-200's seem to have great reviews...
grrr... a nice lottery win would help this situation.