cfpackerfan wrote:I hear ya. I have the 75-300, and I
love the reach, but it is SO soft at it's long end, that it just doesn't do it for me. I can get better shots with my 28-135 and a decent crop. (did I just admit that out loud?)

It's just been unreal to see the difference. I got the 75-300 less than 6 months ago, and pushed it to it's limits I guess. I loved it when I first got it, and used it all the time. Then one day I picked up the 100-400mm f4-5.6 L IS... After I looked through that lens I was never able to be happy with mine anymore. I knew there was no way I could afford it, so I went with the 70-200 used. The difference has just been amazing. Now I can work harder on my composition, and less on trying to get a sharp image. Most of my shots now I don't really do any PP. I just save them from RAW to JPEG and upload. I only make adjustments if something seems off, or if I plan on printing the shot, or doing something special. I do wish I had IS quite often, but that will just have to wait until I'm rich. 
The only time the L came off my camera was when I stuck tubes on it to do butterflies. It covered everything else wonderfully!