I still haven't spun up the PowerDNS for my BOSH, so I don't know too
much about the whys and wherefores for picking/choosing a DNS server.
So this is just me linking something shiny and new. And written in Go,
which is just the way to get people excited about something.
The NTP guys released their own DNS server, geodns, re-written in Go.
blog post - http://news.ntppool.org/2012/10/new-dns-server.html
home page - http://geo.bitnames.com/
repo - https://github.com/abh/geodns/