Black Hawk - Ozark Californians look like a sort of copy of the Deering Goodtime at a much lower price. The fact that Goodtimes are made in California may not be a coincidence! They seem to be very good banjos. I've played one once and was impressed.
In the instructors concert at Sore Fingers this year we were treated to some superb banjo playing by John Dowling (the guy who taught banjo to Frank Skinner on TV recently) on an Ozark Californian - instead of the gold plated Deering he won at the Winfield world banjo championship. It sounded great but I don't know how dependable they are - I've played many Goodtimes and they seem to be as near identical to each other as it's possible to get, and are very well set up out of the box. I think I'd want to play a Californian before I bought it, whereas I'd consider getting a Goodtime through the post.
Cheers
Ray