10 out of 10 points and recommendedlight, silent, good focal range, new technic (STM), sharpness, image qualitydistortion at 18mm (although easily corrected in LR or something), not for FullFrame
In a few months this became my favorite Canon APS-C Lens.reviewed September 18th, 2013 (purchased for $400)
It covers all the focal lengths I need, and it zooms and focuses realy good and silent.
I use it on a Canon 600d/t3i.
I have used an Canon 18-135 (previous model), Canon 28mm2.8, tamron 17-50 (no IS),
canon 18-55 III, canon 18-55II(IS) and a Tokina 35mm2.8.
But the 18-135 STM never leaves my camera, I never need to take it off my camera.
Construction, focusing, sharpness and image quality is way better than the previous 18-135.
In fact it is a whole new constucted lens. Differently build with the STM focus motor.
A huge improvement from the older 18-135mm EF-S IS is that the zoom range from 24mm to 18mm has
been spread-out on the zoom ring, so it's much easier to set precise wide-angle framing.
On the previous lens, it was very cramped at the wide end.
With manual-focus override and smooth zooming, it handles better than most Canon lenses.
I also like the canon colors it produces. For my taste better than the 17-50 from tamron.