I have a couple of colonies headed by Buckfast queens, but might try purchasing some Carnica queens to put into some new hives. I am hoping for some nice docile bees. I am in two minds. Part of me wants to see for myself the differences between these two strains, but the other part says it would be best to stick to Buckfast in all colonies. I am unsure what the consequences might be in future years when the genetics will get all mixed between the two types.