BTW, my budget isn't completely set -- I could possibly do $800 or so, or even wait to purchase an $1100 or so lens, but I would need to wait a while before that option, etc. I wanted a good camera and I went back and forth for a long time as to whether to start upgrading lenses or buy the camera first. I know I probably did things backwards, but through the winter months, using mainly the 50mm and 85mm in my small studio (for mainly children) has worked just fine with my Mark iii. I just want a good zoom lens starting for my outdoor portraits and some landscapes (besides the two other EF lenses that I own). I went from a T1i to a 5d Mark iii...yes, huge jump. I got a lot of great practice on my rebel and the EF-S lenses that I had with it. Down the road, I will keep adding to lenses but if the 70-200 F4/L would be a good recommendation (without the IS) this is what I would look at buying based on the comments....I guess I'll just have to decide whether to buy now without IS or wait until I can afford IS....decisions, decisions....