Hi, I know this is an old topic, but I used to own a Dexter...and have only good to say about them. They don't eat you out of house and home, don't swamp you in milk, and are reasonably easy to handle.
Ours was very wild when we got her, but we were very successful in taming her for milking. She never did let us near her while calving or when she had the calf with her. We ended up taking the calves off her right away, just for our own safety.
She ended up tame enough to put children on her back...
Her milk was the richest and best I've ever used. It was even creamier than the Jersey milk I am getting now. She produced about 3 gallons a day (if I remember correctly) at her peak, and that was more than enough for our family. (There were at least 8 of us)
I made good cheese out of it too.
We ended up having to sell her because we were moving....otherwise, I'm sure she'd still be with us.
I sure got spoiled with that little cow, though...and I would really like to have another...when living situations comply...