My feet are unusually wide and each one has a titanium reinforced joint in it that doesn't move any more - so I have to have nearly all my boots and shoes made to fit.
I agree with Flesh - Daytona Roadstars are wider and slightly longer than the normal 'standard' size boots made by Sidi, Alpinestars etc. I can't get my extra wide plates into any Italian made boots, but the Daytona's have plenty of room, which is handy for thick winter socks.
They're expensive; but worth the investment if you can stretch to it. I've had mine for four years and about 70,000 miles so far and they fit as well as the day I bought them. Years of wear left in them, too.
Altberg - I've not had bike boots from them, but I've had a pair of walking boots and a pair of walking shoes made by them to fit me. Can't fault them for service and quality and the prices are not too bad, considering the product.
I would buy Daytona and Altberg again at the drop of a hat.