I have an 89 Blazer and I just replaced the rear u-joint in the rear driveshaft. Everytime I replace it I find that the needle bearings in the caps on the driveshaft yoke have turned to powder. I always make sure that it moves easily and doesn't bind and that grease squirts out all the caps. Although this is not a tough or expensive repair I don't like doing this every year like clockwork. I've been using the heavy duty "Super joints" from Kragen but I would like some input on u-joints that have a good reputation (I'd prefer one with a zerk fitting). I have a stock suspension, 33 inch tires, no lead foot, and grease it every 6 months. I don't abuse my truck with any extreme off-roading. Who makes a u-joint that my truck won't eat?