I'm thinking about breaking down and replacing the 21 year old strings on my 1977 P-bass. Its only the 2nd set of strings I've ever played on - first set being flatwound fenders that came with my bass new. Current set are Ernie Ball roundwounds. I want smooth, yet punchy. Mellow yet bright. I play in two different alt.country bands, sit it with blues bands around town and and I'm working on a jazz project playing standards and bebop. What strings should I get? - or should I leave well enough alone?