This topic might be horribly lame, but I'm just finding myself more and more interested in bass again and enjoy ANY conversation about basses.
I love my Jazz bass most at the moment because it's so versatile, but I'm GASsing for a Precision. The Jazz does so many things so well, but it doesn't have the same kind of punch that the Precision has. Likewise the Precision doesn't have the same snarl and growl that the Jazz has. Don't get me wrong, I wouldn't want to be without the Jazz.
Now, I couldn't imagine being without the Rickenbacker either. It does what it does so well, but it's not as versatile as the Jazz or the Precision. If I had to choose just one of my three basses, I'd keep this one, mostly because of the sentimental value of it--in 78, I worked at McDonald's for 6 months in order to buy it, and I have the greatest memories of playing it live.