I just had this delivered last week and these are literally my first shots. I had resisted the zoom for a long time but decided that it would really come in handy, and it did. I'm very happy with the versatility, portability and sharpness, and I can really chime in on those eternal 400/5.6 vs. 100-400 threads since I now own both!
Since I already posted the photos on the bird forum, here's the thread for those of you who don't regularly visit there.

