Well, I *finally* took the plunge and bought the only common, commercially available string that I've never gotten before: Blue Steels. As a longtime user of Tomastik Infeld (even on DB and guitar,) and a fan of D'addario EXLs, what can I expect from the Blue Steels? Long life? Superbright? Mellow? Are they gonna tear my hard earned upright calluses to shreds?