I have exceptionally wide feet and no end of problems. I work in walking boots most of the time so I get through a LOT of them too!
Brands I have got along with in the last few years include – I am somewhere around a size 12, but some boots have odd sizing:
Alt-Berg (Size 13) (motorbike boots granted, and custom built – which is always an option with them)
Mammut (Size 13) – Current work boots and so far very impressed with them. Not sure on longevity at this stage though.
Solomon (Size 12.5) – Quests and the trainer style boots the name of which escapes me.
Scapa (Size 12) – Got a couple of pairs on the go at the moment!
Hagloffs (Size 12)
Keen (Size 12) – last ones I tried weren’t so good though.
Asolo (Size 13) – this one surprised me, but damn comfy and was the first time I had gone up a size for fit, but this was as advised by the man in George Fisher (Keswick).
There are many, many more that I haven’t got on with or which fell apart in 6 months or less. My boots tend to be ruined after a year but sometimes I get a bit more out of them!