I still have the factory SIT Stainless rounds on my G&L L1500, but they are too "clanky" for lack of a better term. I don't play rounds, so am looking for input for rounds that will produce good grind with this very aggressive sounding bass, but not be "clanky." My initial thoughts are for Nickel, but I'm open to suggestion. A decent long life is a plus. Not interested in Rotosounds.