Hi tel. Quite a few of the newer EF lenses now have IS. And not all EF-S lenses have it. However, if you have a collection of older EF lenses, then there's less chance that they'll have IS as, obviously, Canon only introduce it for new designs or re-designs.
I've used a 40D for the last few years and really like it. If you can get the corresponding battery pack/grip, it really adds to the handling for portrait orientation shots, although it adds bulk, of course, but not much weight.
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