No matter what boat you get, I think you should put a bob on the top of the mast to make sure it cannot turtle if it capsizes when you have children aboard.

I know that racers think the bob would make the boat a little bit slower, but I have never seen or heard any evidence to that effect. And you say you do not plan to race, so what's the difference if it can give you and your wife some peace of mind -- and make it easier to right the boat yourself.