I have had pretty good luck with some of the Garmont boots- Very High Volume. I wore 4E for a long time, then figured out it is more about volume of the individual shoe that the width.
Maybe also look at a Cabela's hunting boot (Outfitter 7" If I remember correctly is uninsulated?) - My Dad has a pair of them, some Irish Setters, and some NB hikers. He wears a true 14 4E.
Of course, it all comes down to price. You can get some to fit, but I would have to live in them as well. If you step up to customs, it is serious money, but I imagine they are worth it. I will never know.