Here's my situation. I have a fender P-Bass Special currently. I am very happy w/it, but I am still looking for the "perfect" sound. I am running a Ampeg B2R with a Crate 15. I plan on adding a 2x10 later also. I am looking at 2 possibilities in the future. I either want to get a 5 string or a nice 4 string. The tone I'm looking for is a very deep and smooth sound(Dirk Lance,P-Nut,DeLeo of STP), yet a tone that sounds good slapped(Flea, P-Nut). All around a tone close to that of the bassist from P-Funk, just a little deeper. My question is whether I should go with the 5 for the low end or with a 4. I am very comfortable playing 4's but haven't found the tone I am describing. I love the feel of Musicman's, yet the tone of p-bass(except for slapping). So, in conclusion...5 or 4? Which 5? Which 4? How can I modify a Musicman to get my tone? How can I get the Musicman feel with the tone I'm looking for? How can I groove and rock like Robert DeLeo and slap away like Flea on the same bass? Thanks to all, and have fun layin down the groove.