Sufix makes some VERY good line. I've caught everything from 4 foot sharks to 4 inch bream on it. I've caught the bottom several times with the 20 pound mono and I could not break it. We'd cut the drag to full and hold the spool and pull and pull. You'll either get it loose or wind up cutting it. It won't break.
If I buy some more line I may try a different brand, just because I like testing it out, but I've been a Sufix guy for years now.