My wife is the same way. She likes em on the larger side.
And, yes, girth IS more important than length. I am on the longer side, and not quite as girthy. Our girlfriend, though, I am on the top end of the spectrum for enjoyability for her I think. She has a hard time with sex with me due to size. (I'm not "overly large", just larger than "average") She has said that she will "adapt to it though.
Now, if size TRUELY mattered to women, there would be no homosexual or even BI-sexual women, as another woman's fingers are only so large. If a man complains about the size of his equipment, I explain this to him, and tell him to try using his other "attributes".