I've tried A LOT of boots and shoes. A LOT. Asolo, Keen, Merrill, Oboz, Scarpa, La Sportiva, Innov8, Altra, Keen, Vasque and probably other ones I don't even remember. Apparently my feet are mis-shapen clubs because I have big problems with footwear of all kinds, not just hiking shoes. Two basic problems - my left foot is a full half size bigger than my right (maybe more) and my toe length is very different from big toe to pinky toe (imagine a right triangle). In Winter I have the added problem of my feet getting cold very easily. So most footwear I own I either have a left shoe that fits like a glove and a right foot that is very loose, rubs, lets my toes hit front of boot and/or blisters or I have a right shoe that fits like a glove and a left foot that is really tight, crushes my toes and impacts my circulation. In order to get a boot/shoe to have the proper toe clearance I have to get a size so big that my ankle is swimming around in the boot. So I try to crank down the laces directly over the ankle to mitigate the sliding.
Last year I went with a Keen Town And Country (? Maybe they are Summit County. I don't actually recall) and it falls into the left foot great/right foot too loose category. They're fine but fairly soft and I tend to hit my toes descending. 6-7 years ago I caved in and got the Scarpa Inverno double boots for the warmth and because it had a heat moldable insert. They actually fit probably the best of all the Winter boots I've used and I like using crampons that click on versus straps but they are really heavy and firmer than I really want for general hiking. Not awful but it is noticeable on longer hikes. This year I bought a pair of Baffin boots that also have an inner liner, are quite light and are actually really comfortable and warm but they are very soft. I've only done one hike in them so far and I'm pretty sure I'm going to have an issue with the toes hitting the front because the boot flexes so much. They'll be fine for most hikes I suspect. I'm hoping they firm up more in cold weather. It was only in the high 30's the day I took them out for a test drive. Made a lot of water crossings on that hike and could stand in 6-8 inches of water for 15-20 seconds and not even notice. Inside temperature did not change a bit.