I agree with tiredx2 about the size of babies/mamas. my midwife is tiny, 5'1" and about 90lb and had a9lb baby at age 21. my babies were 8 and 8 1/2lb and I'm 5'2" and 115. easy birth, fast birth.
which leads me to my next point of agreement: calladona, yes. don't wish for a fast birth. I found 6 hours was fine, very fast was scary, painful, sore, bruisy and too intense. My mind didn't catch up with my body until a couple days later. People say I'm lucky, but precipitous labor mamas usually know what I mean.
I'm having a boy. I was pretty disappointed at first. I wanted all girls and now I'm at 1 girl, 2 boys. But my sons will be 2 years apart, and I bet they will love that.