Questions about calm bees

I'm looking to purchase a new package of bees. I'm curious about the different breeds. I caught a swarm, and I have 1 Italian hive. My experience with the Italians is they are a bit aggressive. I am searching for carnolians due to our climate in the north but the internet keeps waffleing between they are the calmest and they are more aggressive than Italians. I am not one to enjoy being stung or dealing with aggressiveness, so I'm looking for the calmest breed I can get to help ease my anxiety as I progress.

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So, whats everyones experience? Thanks for your insight!