I LOVE my 24-105L - best general zoom I have ever had (and quite sharp, even on corners). It is hard to imagine anyone choosing the new 24-70 over this one, unless the new one was a lot cheaper, which of course it is not. Also, with the new high ISO capabilities of modern DSLR's, image stabilization is not as necessary a feature as it once was. Sure it is nice, but you can get by. I just picked up the non-IS 70-200 2.8 (to replace a broken Sigma) because it is a thousand bucks cheaper than the IS version. I wonder if Canon will follow this model with any other lenses - keeping an older non-IS at a cheap price alongside a new IS at a much higher price?