Hi, I had the Tamron 28-75/2.8 XR DI zoom for my Canons and was very satisfied with the results. Unfortunately is was stolen. Now I'm in the market for a new standard zoom for traveling. My requirements are: - small - lightweight - good optical quality, should give sharp slides at least down to f/4 - not too expensive (below 400€) f/2.8 is not a requirement, but i found it to be quite convenient in case one needs it. When I bought the last one 3 years ago I had a look in the Sigma 28-70 as well, but found it to be horribly noisy. Zoom range: lower end 28mm is sufficient, upper range: well, as big as possible. The lens is intended as a complement to a Canon 70-200/4L. Any recommendations, except the obvious, buy a new Tamron?