Quote Originally Posted by Chan Tran View Post
I am a Nikon guy so I am not familiar with Canon. I have an off topic question. Which are the camera models that support IS? I meant only film cameras.
It's self-contained in the lens; works on any EOS body.

Personally, I think I'd go for the smaller lens, unless (1) you really want the extra stop for shallow DOF, (2) you want to maximize shutter speed to freeze the subject AND you can focus on that subject at f/2.8, or (3) you have the carrying capacity of the Incredible Hulk and don't care a bit about the extra weight.