IMS bearing question

[Homeoboxter]

I liked the youtube video, I saw another one from him where he cuts IMS bearings apart and looks into them, that`s a good one, too. I`ve seen many reports on the web about replacing the original IMSB that was otherwise in perfect condition, especially the dual row ones. The original ones apparently last for 100k miles at least, and afterward when they get replaced to a new one, those cars are still running within the next 100k miles probably (or at least cars over 200k miles are rare), so there`s no way to really tell if any kind of IMSB upgrade is better that the original 2 row bearing, which cots like $50. And I agree, creating hysteria and selling "the solution" for $800 for cars worth 5k is just not cool. IMHO.