Our bees are Carniolans–mostly. One hive has a Carniolan queen bought from Charlie Toth in Somerset County. His queens have been great for us.
Our second hive has a queen the bees raised themselves this Spring, so it’s part Carniolan, too. Our third hive is based on a swarm I caught… and I’m betting they’re Carniolan hybrids as well.
So far, the pedigreed queen seems to be raising the strongest hive with the most honey.