So my wife used the Panasonic GH2 with the 100-300 lens for most of our time at the Bronx Zoo, and looking at her photos now she got some real gems. The Panasonic kit was significantly larger and more expensive than the Nikon 1 V1 kit I had but still much smaller than an APS-C dSLR with 600mm reach. And the results show.
Here's my take on the of bird(s) with the Nikon V1:
and here's her take with the Panasonic GH2:
She's really keeping the colors muted while I'm pushing them to 11. Here's another fantastic shot from her with the GH2:
She's an excellent photographer in her own right and has a very different eye to mine. Click on the photo and check out her Flickr.