Both brewpubs are OK. Personally, I would find time to make it to Fort Collins (45min) one evening. Coopersmith's is worth the visit. Or, if you have some time during the day, check out one of the craft breweries. New Belgium has an interesting tour and a free tasting room. O'Dell's has a great tasting room. Even Fort Collins Brewery has some pretty interesting stuff. Another alternative is to head into Laramie (45 min) and try some beer at The Library, Elmer Lovejoy's, or Altitude Chophouse.