Jazz Bass - Scalpel.
Precision Bass - Sledgehammer.
If you're starting out I wouldn't get to hung up on tone. Go with whichever feels better to play. And look at it this way - a lot of people have one of each. Whatever you buy now will be a long term investment, it's not like a P or a J will eventually go out of style. So no matter which one you get it will be a good, solid purchase.
Precision Bass - Sledgehammer.
If you're starting out I wouldn't get to hung up on tone. Go with whichever feels better to play. And look at it this way - a lot of people have one of each. Whatever you buy now will be a long term investment, it's not like a P or a J will eventually go out of style. So no matter which one you get it will be a good, solid purchase.