I have had many a pair of boots in my time, From Expensive Brasha's and Meindl to Cheap'o' hi-tec, Leather, suede, fabric. Best by far for comfort have been the Meindl and Lowes.
However for full. functionallity and comfort then I just love Issue boots the best. I'm fortunate that they actually fit me quite well. Have walked the Pennine way in them, Did the Nijmegan marches in them and various Patrols, best of all walked/jogged 100km in 18 hours across the southdowns. Not one blister!!! Kept my feet dry and no twisted ankles. A bargain if you can get hold of a good second hand or even first pair cheap. The Lowes are just as good but more expensive