I am from Michigan and can attest to it being a great area for craft brew. I've never been to the NW but I have heard a lot of good things from friends who have gone to Washington, Oregon and N. California area.
I put Michigan beers, and other breweries in the Great Lakes region ahead of national or international brands even before I was into beer so to speak.
We have multiple beer festivals in every season. My favorite is the Michigan Brewer's Guild Summer Beer Fest.
545 different beers at last years event from 60 different craft breweries.
Every year there is lots of great beer, good music, delicious food and tons of people from Michigan as well as people I see every year from around the country.
There is even an anniversary ale made by many of the best Michigan breweries working together and it's made using only Michigan grown wheat and hops.