So between us we have grenaded 5 of them. They have such a bad reputation in my offroad group that they are referred to as "gov-bombs". I still say they aren't very durable or effective over about a 32" tire. I've had such poor service from them that I will not run one in anything I take off road anymore. Then again I've never been accused of having a light foot or driving finesse!
Selectable is nice, but a Detroit is much cheaper and I personally haven't seen one break in a 14ff.
Mike