Easy. The one I use. I've got another one on the wall looking pretty, and another one in a case under the bed gathering dust.
I've never really understood the point in owning loads of basses.
I get it if you're a session musician or doing some recording. But for most pub band type players, who wants to cart loads of basses to a gig and faff about changing every other song?
One bass for both practicing and gigging. Job done.