I have more Ariat boots than I can count! Western, love 'em! Lace up, zip up winter, Terrain summer boots. They are all comfy. The terrains are really nice, but mine don't have steel toe and do get wet. My lace up paddock boots are super nice and have the Cobalt foot bed, BUT, they did hurt my ankle when breaking in. The lace "studs" would dig into my upper ankle when I was riding English and had my foot well flexed with heel down. It hurt so bad that I finally took them to a shoe repair place and had one pair of the studs cut out, right in the middle, so that I could flex my ankle with nothing pressing on it. Now they work beautifully.
I like my winter zip up ones. Zip ones offer less support, but are more likely to slide off your foot if , God Forbid, you ever got entangled and dragged by the stirrup in a fall.