I am just curious what you guys use the 70-200 (any version/make) for when on a crop camera? I got it just because I could not resist - it was an absolutely unbeatable deal on a local Craigslist. But when I go to a local Audubon park for birds, I use my Sigma 120-400, as 200mm is too short even with a 1.4x TC. When going to a city, particularly in Europe, I use either 15-85 or 10-20. For macro - EF-S 60mm.
What is your experience with this lens on a crop camera?