Why don't you call the music store and ask if you can bring your rig in to demo some of their basses? Just say that you're really interested in buying a bass from them, but you want to make sure your purchase fulfills your needs.
It's a reasonable request, and they can handle 30 minutes of loud demo-ing if it means a sale, right?
EDIT: I have an MIA Fender P Deluxe, and it's amazing, so I'm sure it'd sound good regardless, but for your own tastes, you should try it out on your own since you're the master of your own perceptions.