Has anyone popped for the SIGMA's AF 120-300mm f/2.8 DG EX APO HSM OS (5.7-lb.) lens, yet? This would seem to be the one to have for the just about everything telephoto lens ... and the waistline to go with it. At the MSRP of $4700 it is, admittedly, a little rich for most folks, but you never know.

It's new ... and stabilized. How does that shake out?