IMHO:
Custom:
Alembic
Ken Smith
MTD
Overwater
Sei
Manufactured:
Fender
Warwick
Lakland
MusicMan
Ibanez
There are lots of others I like such as F-Bass, Brubaker, Status, Sadowsky, Roscoe, Wal, Ken Lawrence...to name a few. I have been blessed to have owned most of the basses I have mentioned in my top-5 at some point in my career, so I am quite bias in my choices.
