I've quite happy until now with bind 9.7.3 + ecdysis patches. Works fine. I didn't try any other.

The interesting point is that you can configure bind both as a forwarder and a dns64 relay, which means that it will first try to get an AAAA record from its upstream, and if it fail, generate a dns64 AAAA. If your upstream is in whitelists like Google's, then you don't need to put your dns64 server in the whitelist.

Here, still under Linux, ecdysis failed. I recommend in exchange to use Tayga. By the way, tayga is packaged in debian now. The package is for sid, but I installed it on stable and it worked fine.