Here's what I shoot a lot of... Wildlife, zoos, people, and sports.
Right now I have the 55-250 IS and do greatly enjoy it. However, I would like some wider aperature options, faster focusing, and L features so I will be upgrading at some point. This weekend I am going to shoot a family member in a kids soccer game and hope to get some very high quality shots.
I'm going to rent a lens and can either rent a lens that I may buy in the future or rent a lens that I could re-rent in the future...
70-200 f/2.8L IS with and without 1.4x TC
300 f/4.0L IS
300 f/2.8L IS
Which am I going to enjoy the most for what I shoot? If I try the 300 f/2.8, I probably would re-rent it multiple times instead of buying it ($3900 is a little rediculous for my budget). The others I would consider buying at some point. Should I go crazy and rent the big gun of those three, or keep it real and try out the 70-200 or the more modest 300 f/4? Thanks!