I'm looking to restring my '89 G&L sb-1 & playing through a Hartke 2155 Combo. I'm using a set right now that seems way too tinny than what I like. I play with my fingers. Mostly worship and rock. I usually use a low gauge D'Addario, but I've been itching for something that gives more of a low, solid boom. I'm not that big on GHS Boomers. I've heard some good things about RotoSound. I'm also wondering if it may have to do with my set up as well as I only play through the combo, no racks or effects. Anyone have any thoughts?