I've only setup a single BIND server, and chose that due to previous exposure to the zone file format. It got the job done, pretty quickly even, but I'll definitely consider djbdns next time the need arises.
Next time around, take a look at PowerDNS. You like flat files as your zone backend? Supported. You want an SQL backend? Supported. You want an LDAP backend? Supported. And so on and so on.
