I've always been a fan of Ariat and Caterpillar, but Cat boots are usually lace up so for you I'd recommend Ariat. Work boots aren't BIFL by any means just because they get this shit beat out of them, but I homestead and my Ariats will generally last me a couple years. There's a reason they make up 70% of the footwear at your local Tractor Supply.

Def a "buy it in person" thing with any cowboy/engineer boots; even within the same company, different boots (in the way that a company will sell 3 nearly identical shoes but each has a different name and a slight design variation, not 3 boots that are actually the same boot) can have very different fits, so you'll want to try them on and make sure the toe box and heel fit right. You can do that with online stores but the added time for the returns/exchanges process is a hassle IMO.

Also, free LPT: when breaking in your new boots, don't use moleskins. Go buy the smallest size training pads (panty liners) you can find. They do the same thing, stick to your skin better, are perfectly shaped for your heel and the ball of your foot, and you can buy about 100 of them for the same price as 6 little squares of moleskin. Used this trick all the time in the army.