
Wow did not think i would see this in this list, i love mine and at 200mm i don't need IS but that being said i don't shoot in low light with it.
Don't get me wrong, it's a fantastic lens, but it wasn't an upgrade from the 70-300 like I was hoping for and that's because I didn't realize how much I appreciate IS. Since then I have replaced it with the 4L IS and am extremely happy with that lens.