I tend to go for brunettes, but in the end, it really doesn't matter. I might be more apt to look at a blonde simply cause I want to determine if it's a dye job or not.
you know...regarding the stereotype, I think it's a stereotype for a reason. The majority of blondes I know or deal with are a bit...slower than brunettes or darker haired girls. Now, that might be cause they've learned that it's ok to be a bit more ditzy being blonde as most men might find that endearing (I certainly don't) or maybe over the years they've realized that they don't need to try as hard being a blonde since they think men will be willing to look over their density and focus on their looks. I don't know, but I can say the dumb blonde isn't a myth.