I need your advices/experiences on wide angle zooms for canon.
I think canon's tele zoom range is far more extensive compared to their wide angle zoom range and this doesn't help me when I really need a good wide angle zoom that would complement my 70-200L.
Naturally I need sharpness, good contrast and good build quality. I am no longer interested in cheaper lenses that I would eventually sell as I caught the "L flu" 
Unfortunately the only wide zooms I could find from canon are:
1) 17-40L which lacks IS and some people complain that it is not excellent in at all apertures
2) 17-55 IS which is made of some sort of plastic, IQ is known to be really good though, I think IS lacks panning mode and its APS-C so not future proof as I am sure I will upgrade to a full frame in the near future.
3) There is a tamron 2.8 which has a very long name and I can't remember it now
I don't know much about it so any comments will be much appreciated. (EDIT: Found the name: Tamron AF 17-50mm f/2.8 SP XR Di II LD Aspherical [IF] this is like joke! who could possibly remember this!)
If anybody could please comment and advice on the issue I will be VERY happy. My budget is not limitless however I am not afraid to spend 1000$ or around that price for a quality glass that would meet my demands.
Thanks in advance.
Emre

