I just threw a set of Sadowsky Bright nickels on my P bass. BN40's so they are 40-60-80-100 gauges. Just perfect. They are a very taunt string, so they have a nice thump, but i still have the roundwound growl with the added brightness of the design. I absolutely hated these strings on my Jazz but they just rule on the P bass. Just thought I'd let some people know and see if anybody else out there has good luck with these strings on a P bass.