Thanks for link, very helpful.
I just returned it over lunch... a bit relieved. I will wait a bit till I bite again on it. For now the 17-40 works for WA, albeit F8ish and the 70-200 mk.ii is a God send... I will play with those... but I am missing a Big aperture prime. 50mm perhaps. I want something sharp and dreamy... would Ziggy f1.4 fit the bill?
K-AMP, I did more test shots(indoor & outdoor at 24mm), my lens seems to be ok. All shots @ 24mm have little vignetting, other then that, the lens looks very sharp. I will compare my current lens to new lens that Crutchfield going to send me. I'll keep the better copy at the end.
I might pull a trigger on 50L this coming x-mas through Crutchfield, since I have little more than 10,000 reward points with them($500ish cash value). Hoping Canon will have SUPER rebate on all lenses through holidays.