The real argument for the "obsessers" like myself is, ROI vs. Anal-Retentiveness.
If you are 100% committed to doing what's absolutely the BEST for your engine, I've always thought that 1k mile OCI's with SuperTech is better for your car than 8-10k mile OCI's with Red Line, Motul, PU, M1, etc.
Of course, 1k mile OCI's with Red Line or Motul would be THEE BEST, but people don't waste that kind of money and talk about it, admit to it. I do this on my scooters/motorcycles, but most hardly get driven, except my Ruckus, and that thing only holds 0.7 quarts of oil. So I can afford to "waste" my money on that thing.