In the liquor stores I would look for Berkshire Brewing Company beers (bombers and growlers only). Its brewed about half an hour away in Deerfield and every offering I've tried (7 or 8) has been excellent.
I would suggest checking out Paper City Brewery in nearby Holyoke. Its in a sketchy warehouse, in a bad neighborhood but on friday nights (i think starting at 6PM) for 7 dollars its all you can drink for 3 hours. And trust me, it really is all you can drink. And when you leave they give you a couple bombers to take home. The beer isn't world class, but you you will drink much more than 7 dollars worth.