I'm 5'11" 175lbs with broad shoulders...
I'm 5'11" 175lbs with broad shoulders should I go with the medium or large??? It always seems like I'm right on the cusp of these two sizes!
I am an inch taller and 5lbs heavier than you, with a fairly athletic build. The large fits perfectly IMO. I could wear a very light base layer below and still have freedom of movement. Anything heavier beneath would be cumbersome.