For layering? Or outerwear..... Two that stand out to me for layering is the First lite Halstead, and Sitka heavy weight core. ....I think the heavy weight core and Fanatic hoodies are really nice over a med weight Base. I can see them taking me deep into the season.
The only fleece outerwear I have anymore is some Day one Fleece, it's really nice stuff if your not moving around much....
Mostly for part of a layering system but its always a plus if its tough enough to be an outer layer. After a quick search I was leaning towards a Halstead or maybe a Cerdic.
Sitka has a new Core Mid Weight and Heavy Weight fleece that are very nice. The heavy weight piece is extremely warm yet lightweight. If you want features and pockets, the new Sitka Fanatic Hoodie is another great piece.
You won't go wrong with the Halstead, it's a nice piece.