So far I've had embdens, americans (blue), toulouse, African, and mixed (african). The ones that were the nicest were the ones not raised by me
I had one embden that was a real butthead, but I hatched and raised him. Now I have an african that is turning into a butthead, hatched by me but raised from 4 weeks by my other geese. The mixed babies are still babies now, and have been with the adults since they were about 2-3 weeks old. So far, they are not mean, but they aren't scared of me either. The ones that I have bought as adults, ones that were raised by geese, are not mean at all, because they are scared to get too close to me. So that's my input, buy whatever breed you like the best, as long as they were raised by other geese
ETA: The african (pure) is also a 'baby', hatched in March I believe. But he will charge my son when he gets too close, and loves to chew on the dog. He tried to bite my white sneakers one day, but I normally wear sandals, so I'm sure he just knew those things were trying to get me
Geese are so fun though, I don't really think it matters what breed you get. I always said that I didn't want embdens, every mean goose I'd ever seen (probably every goose I'd ever seen period) was an embden, now I have 5 in my flock of 10
......And I'm planning on a few more whenever I can find some
Eventually I will have only embdens so they will be pure and won't have to be penned up, I hate penning them up