re: Name a brewery that that is world-class, but under the radar and not well know...

Since the thread is still going, I'm going to add some local to me. I'm only listing the under the radar ones, although some may be known to people on this board, these are only distributed locally in the Portland area and aren't crazy trade bait (like De Garde or Great Notion).

Block 15 - they do everything well. Sours, stouts, IPAs, pilsners, and so on. A little off the beaten path, in Corvallis.

Culmination - Small brewery on the NE side of Portland. Killing it right now, but nobody knows about them. Some of you may have tried Obscured By Clouds, a standout even amongst the NEIPAs available today.

Breakside - I'm not sure how well know they are nationwide. I know I've posted enough of their beer that regulars on this board should know them. They brew a ton of different beers (well over 100 different beers every year).

pFriem - They do everything well and have a brewpub in a really cool location in Hood River.

Trap Door - in the Portland suburb of Vancouver, WA. Up and coming and doing some great NEIPAs.