don't kid yourselves, they have a bad rap for a reason. I've had 22 years of hearing of other peoples' woes. A higher percentage of them fail than the other transmissions you can run. does that mean any particular one will go in the next month, or even year? of course not. all I ever say is to be prepared and drive like a sane person.
mine lost 5th gear (best guess since it was no longer available) and blew a hole out the side of the case while I was just tooling along in freeway traffic. 2wd on 30" tires. still got me home though! gear oil is overrated! (though I did need to stick a finger in my right ear because the whine became deafening).