I don't think not breaking sticks would be anywhere on my list of things to look for. In fact if they don't, the soles are to soft in all likelyhood. I also don't like rubber boots, they are to hot for me and my feet sweat so bad I might just as well be bare foot. Also, if your feet sweat to much and it's freezing, you better keep walking as your feet will feel like they are in an icebox even if the boots are insulated. What is necessary in a boot anywhere is that it gives a good platform to walk on, has a stiff enough sole to grab well on side hills, that the shoe breathes well, gives good ankle support and that they are water proof. Knee high has the advantage of protecting your shins better and guarding against snake bite where snakes are.
What ever you get, the first conciderations should be support, dry, traction and warm. I find nothing does these things better than leather, insulted if you like. All leather boots benefit from waterproofing, other wise they do leak. Danner and others have a liner in them thats supposed to do that. I've had one pair of Danners and they are good boots but, get your socks wet over the top of the boots and water wicks into the shoe anyway. My pair cost me $165 and lasted a long time and I would get another pair except for the price.
Now I buy boot's at the Wal-Mart so long as they are leather. They are cheap and you can waterproof them. As far as fit, which someone is sure to bring up, they fit as well as almost any you can buy if you try them on first. The only company I know of that built boots to customers feet were "West Coast" and "White" As I recall they cost about the same, maybe a bit more than Danner's and last a lot longer. Then if you do need them repaired, send them back and they rebuild them for you, at least they used to.
Other than "West Coast" and "White", the biggest reason they last so long is that they don't get worn everyday. "West Coast" and "White" are boots designed for logger's and timber cruisers. They wear them every day all day and without their feet, these guy's have a problem. They can be had without "hob nails".