I don't get a pair of boots to last much more than a year. I treat every few months, keep them clean, etc. Just don't last, moisture,mud,chemicals, cow manure,etc takes a toll. I haven't tried carolina's for a long time. Used to buy a mid priced Wolverine for years. But I've started having pretty serious heel/arch problems. Now i buy Redwings for the arch support, hate to because of the price. $250-ish. But it helps me alot. Also have gone to Merrels for all my other footwears. I have to wear an open toe "flipflop" when i'm in my home. (no more barefoot.) I got these from Merrels too. Damn pricey stuff, but for me, it's helped alot. These brands were mentioned by my foot doctor. It's all out of pocket when i go see the foot doctor, so i try to follow her recommendations. But damn...I've spent $400 in footwear since that last visit. But she was right.
Sorry rambled on there. The Redwings are very comfortable. And i can buy them at an actual boot/shoe store. Thats their main business is selling boots/shoes. I know if i have problems, I feel i get better service. Which IMO i should, i am spending at least 2 times more for work boots than I used to. Also, when i was buying cheaper boots, that may have been the start of my heel/arch problems. Thats my docs opinion.