Some of the finest modern open back banjos are made by any of the following:
Kevin Enoch (at least a 4 year waiting list for a new one)
Mike Ramsey (Chanterelle)
Bob Flesher
Lo Gordon (Cedar Mountain banjos) - I've got one - sounds great.

I've played a few examples of all of these - they're fine banjos.

No two banjos sound exactly the same, even when they're made by the same guy - you've got to play a few, then the one that really suits you will climb in through your ears, grab you by the wallet and not let go - you have been warned. Good luck.
Ray