Keen make vey good puts
So does Dunham....thats what I wear
I also wear New Balance Light weight ones in the summer
I've had a good experience so far with a pair of Merrell Insulated boots this winter and I have wide flat feet too. If you're looking for something for hiking in warmer weather (not snow) these might work.
Men's Moab Mid Waterproof Boots - Official Merrell Online Store - J88631
Sawtooth Men?s Hiking Boot ? Choose Lightweight Hiking Boots from Merrell - #stocknumber#
I have no experience with the brands in the OP.