AB makes a very high quality product that is worth every penny. They have kind of an acquired comfortability, as they have no insole. Once you get used to them, they will feel as comfortable as tennis shoes. Both the Horsepower series and the regular series are great boots. I've owned pairs of both type before, and the main difference I've noticed is that the lower-end boots use steel nails to secure the sole to the midsole, whereas the higher-end boots use lemonwood pegs. These pegs are meant to swell and contract with humidity and temperature, and do not pull out. The nails have a bad habit of pulling out. AB uses great leather, and as long as you throw some saddle soap on them once every few weeks, they will last you a lifetime. This goes for the soles of leather soled boots also, many people do not realize that you are supposed to condition the soles just as you do the lowers and tops.
So, are they worth the money? Absolutely. AB uses great materials assembled by expert craftsmen, and will last a while if taken care of. When the soles do eventually wear out, there is a great little shoe shop in Bryan where you can get them resoled for a pretty reasonable price.