^I completely disagree. I've always found little girls of 7-8 to be incredibly bitchy, and little boys of all ages much easier to deal with (from a teacher's perspective).
I can see that, and being in a large group of girls that age might drive me crazy, but on their own they seem sweet enough, especially around 6 years old.
Honestly I don't really like boys of any age all that much. The way they play, talk, act just rubs me the wrong way somehow. I don't like being around them.