If you can afford to do it, I believe the best way to go is the billet steel yokes with u-bolts sold by Mancini, Mopar and some others. If everything is the way it should be, the straps hold fairly well. But I have found that if there are other problems, like wrong pinion angles, misalignments and even the OEM yoke actually spreading over time, it can fail. I had a yoke spread on me and caused the u-joint to hammer itself out. I got the steel billet yoke and use solid Spicer 7260 u-joint and no problems for years now.
When you have a driveline failure, it's usually difficult to figure out what actually caused it or broke first. But the "spreading" can be caught with periodic inspections by making sure there is no play developing between the yoke and snap rings with the rear jacked up and in neutral.
My car has run mid-high 11's at anywhere from 3,540 - 3,700 lbs+.
