Oh my. These are pretty cool. I got a reeealy skinny set off ebay for cheap, and put them on my JP-90. I've discovered fairly recently that I like the sound of bright strings on a P-Bass with the tone control turned way down. These certainly fit the bill, giving that fat, furry sound. With the treble up, it's Marcus city - the tone, that is, not my playing. This set is a tad light for me at .035-.095, but I'm leaving them on for now. If they sound as good in .040-.100 or maybe .045-.100, assuming they come in those gauges, I may be hooked.