Morning all, I'm looking to pick up the Sigma 70-200 2.8 II EX DG APO Macro HSM AF Lens. Now I'm familiar with Nikon's random letters (ED, DX, etc) but Sigma's I'm a little confused with. I believe that HSM means that it'll work with the D40/x/60 which have no focus motors - am I right? I've heard some great things about this, and for half the price of a comparable Nikon it seems like the most sensible choice. What do you guys think of it? I am aware that it has no VR, and I'm fine with that, it'll be mainly used for portraits and fast action (sports etc) so VR becomes moot.