yeah, I've seen the alembic custom shop, they make the worlds most incredible basses, 'kinda' expensive though
I dunno the utopia, I played a Orion mark king custom once in a shop, it rocked, but damn... that fucking pricetag
Ken Smiths, I dunno, never played them, CT's aren't my thing, I hate their design, Fodera's are the shit though, same goes for Sadowsky's. not exactly your budget priced basses though.
alembics are hard to get hold of here though, I only saw one in a store once and the the guy who ran the store was the owner, eh, its probably because of the pricetag.
Mark King plays some of their mean customs on his DVD, crazy shit, I'de love to own an Alembic.