I have this lens and I really like it. It's very sharp. I don't find it heavy at all. I use it for football, soccer, lacrosse, zoo trips, etc. No problem hand holding it all day. Here are few shots using the 70-200VR. I can't blame any IQ problems on the lens, I'm sure any issues are my fault. I say buy it, you won't be disappointed.
Couple football:
Soccer:
Zoo:
