I also suggest going into a store (any store) to try on some boots because the arch support will make all the difference. In general a gore-tex boot or shoe will be snugger just because of the way the shoe is sown so in terms of a wide (which I'm assuming is what the w stands for after the size you put) you might want to look at someone who generally has a slightly wider toebox to begin with. Oboz makes a great shoe overall in terms to those wide sizes, the comfort of the insole and the durability. Keen has a slightly wider toebox than others but it doesn't seem to be as all in compassing in terms of insole comfort. 

The other thing you can do is find the boot you like in fit and get a separate insole to fit your arch.