I've heard good things about Browns Guitar Factory's work as well. They come highly recommended for repair work.
On that note, there are a couple of their basses at a little shop called solidbodyguitars.com in Mounds View. They specialize in vintage uber expensive guitars mainly but they also have Phil Jones bass amps and the BGF basses there. The Phil Jones stuff was interesting but I wasn't impressed by the price or the lows it put out.
The Browns Guitar basses were very well made and the fretted/fretless thing is interesting. I picked a couple up and they were fairly heavy but well balanced. I put them back down when I heard the price.
Does anyone know of any other bass builders around here? The ones I know about are:
ToneSmith guitars ->
http://www.tonesmith.com
Benedict ->
Link Removed
Ecliptic basses ->
Link Removed
Browns Guitar Factory ->
http://www.brownsguitarfactory.com/
I haven't seen any of them in person except for the BGF ones. I'm thinking of building my own someday when I have free time.