I just got back from a trip to vermont a couple of weeks ago. Had a bunch of pics, but my camera somehow didn't make it home with me. We fished all over the green mountains, including the more well known waters like the battenkill, mettawee, white, and Deerfield rivers. The more "famous" streams were actually the biggest disappointments of our whole trip, especially the mettawee and battenkill. I don't claim to be the best angler in the world, but I can usually land a few fish even in tough situations. We fished the big streams HARD, and came away with little to show for it. After talking with several locals, it seems as though the hurricane several years ago took a heavy toll on some populations, and you will see evidence of the amount of earth moving power that rushed down those streams.
The highlight of the trip for me was fishing the small streams in the national forest (including one that provided the fastest action I have ever had on a stream), and finding some outstanding beaver ponds with quite a few willing fish (including my personal best brookie!). Some of the smaller streams like the middlebury and new haven rivers were really nice too.
PM me if you'd like more specifics, but I would try some of the smaller streams in the mountains - there are plenty near Bennington/manchester to keep you quite busy!
Or head to the catskills!