Several months ago I bought the Canon 70-200 2point8 new - the original nonIS version. Bought it because it was a thousand bucks cheaper than the ISii version. Fantastic lens, no regrets whatsoever. I have read the ISii is sharper but mine is so sharp that I cannot imagine any average person being able to see the difference in real life photographs (as in NOT pictures of line charts). IS would be nice, but not absolutely necessary IMO due to the excellent high ISO range of modern cameras. (I use it on a 5D2). Of course I also use a tripod quite a bit. Often use it with the 1.4xii extender with equally good results.