If you ever get to Minnesota you might want to try The Surly Brewing Co.
.That's the hot high demand brand in the Twin Cities and is limited in distribution.
As far as more nationally distributed microbrews, I've always liked Bell's Brewery
out of Comstock, Michigan. Their whole lineup of brews is topnotch.
Then when I go to Wisconsin (about once a month to see the grandboys) I always stock up with the New Glarus Brewing's
many labels and brands as they are only sold in Wisconsin.