I want to find out with the next one, due to the lack of bonding I had when DD was born, and we're looking at buying a house. I don't want to commit to buying a 2 bedroom house and then get pregnant and have a boy.
I think that your DH could find out. Maybe try and convince him not to, it's a great surprise!! And if he decides he really wants to find out, make him wait til 30 ish weeks, instead.