RE: Sigma 17-70 2.8-4 DC Macro OS HSM C

[Yuppa]

Does anybody have any experience with this lens?  DxOMark rates it highly, "This makes it the 5th best APS-C zoom lens tested on the Canon EOS 7D!"

http://www.dxomark.com/index.php/Publications/DxOMark-Reviews/Sigma-17-70mm-f2.8-4-DC-Macro-OS-HSM-C-Canon-review-The-Above-Standard-Zoom

As I do a LOT of video, I'm most interested in OS (Sigma) noise vs. Canon IS noise.  And yes, I know an external mike is best.

http://www.youtube.com/watch?v=RKAjKfF8OS4&noredirect=1

Not a lot on YouTube about this NEW "C" version. I'm looking for examples (especially videos testing noise) and thoughts--that's all.