DNS-Only cluster. Use BIND or PowerDNS?

Hello, We are currently using BIND on our dns cluster of four DNS-Only nameservers, and also BIND on all our cpanel shared hosting servers that connect to the DNS cluster nameservers. Should we switch to PowerDNS? Is this possible? What are the "gotchas"? Do we need to re-setup everything on the four DNS-Only nameservers? Is there any necessary additional configuration changes to make changes on the cpanel shared hosting servers? Do we need to resync anything after making changes, etc? Thanks.