Power pro seems to have a good reputation for surfcasting.
I might fill one of the spare spool of my Daiwa Emcast with 20lb powerpro braid. Would mainly use it for Snapper fishing because I suspect the abrasion of the east-coast beaches would damage braid quite quickly.
Although tempted to fill it with Daiwa Saltiga braided line. But that stuff is $60 for 200 yards.