I'd check out American Guitar Boutique (
www.americanguitarboutique.com). Cory and Felix are both great guys, and will be more than happy to help you out.
I don't think they have quite the collection they used to; but still amazing stuff.
Otherwise, check out Twin Town (
www.twintown.com) or Willie's (
www.williesguitars.com). Willie's usually has a good number of vintage basses. A real "old school" vibe. Twin town is more sporadic, in my opinion.
Also... Planet Bass in Maple Grove. They have a lot of higher end basses. Foderas... MTDs... Zon... Alembic... Modulus... etc.
