My wife and I stopped in Amherst last weekend to check out Trider's brewing. It's out in the industrial park there, but the beer was very good. Super friendly and knowledgeable staff, the guy took us on a tour of the brewery and was generally great to chat with. They have what looks like a 10 barrel DME system, but the fermenters are small- I'd guess 5 barrel or less.
They had a variety of styles, but seemed to be mostly european styles. Each beer was clean.
They had a Coffee Blonde (White Stout) which was very good. They steep whole coffee beans in the fermenter. This was the highlight for me. Their ESB, amber and honey brown were also very good.