80/2 pinpoint oxford is a true workhorse of a fabric. It can be made with a spread collar to dress it up instead of a button down.
Royal oxfords can sometimes be a bit heavy. Higher thread coun royal oxfords are quite nice. There is a Thomas Mason 140/2 that is great.
Real Sea Island cotton is very expensive.
I doubt the shirt from Jantzen was real SEa Island cotton. Not at $42.00.
The fabric alone would cost more then that.
BRoadcloth's vary in opaqueness(is that a word) It depends on the construction
the 200/2 fabric gets quite dense and is amazing. Of course i is quite expensive as well.