The 3rd gen bar has a wear point as well though. Have read that people are still having problems with the bushings wearing out on the 3rd gen bars as well at low milage. I know Don has been contacted about a 3rd gen replacement as well, as some have had issues with the 3rd gen bar as well. Personally, I dont like the 3rd gen bar for the reason is that its a dealer part, and most impartantly, it has 2 "soft" bushings. One side of the Trac-bar in my opinion should be fixed. Less chance of play, and stiffer.
Also, Don's bar is rebuildable with off the shelf parts, he only advertises it this way for a simple reason. Wants people to know that if for some reason his company was to no longer exist, people could repair this bar if needs be. In all honesty, I dont think we ever have to worry about that happening. The paticular joint he uses on this bar is top notch. A good part of the expense of the Thuren bar is in that Jonny Joint. He went with the more expensive joint because its know to last and has one hell of track record of not failing or wearing. He did his homework on this one. I have litterly spent hours on the phone with Don over this and other parts on our trucks. His stuff is more expensive than most, but there is a reason, and I hate to use this old saying, but ya get what ya pay for.
just my . 02