I have no experience with any of the discs you mentioned, but purchased the LLC5 4 in 1 Utility Disc by Audiosource (that's the complete name) from HMV records (in Canada) a few years ago for about $15. It is a complete set-up disc that also offers a lens cleaner as well as a burn-in track and a demagnetizing sweep tone. I use it to clean and demagnatize about once every week or 10 days and it works quite well; the demagnetizing is probably more dramatic the first time you use it, and a little more subtle when used on a regular basis. The burn-in track is very worthwhile (although you don't use it very often!) and allows you to "burn in" components or cables by repeating the track to run for about 6 hours. It all sounds like a lot of voodoo, but I wouldn't be without it. Don't know if I'd want to pay $150 for one of these discs though. For what it's worth, if they're still in business, company is AudioSource, 1327 North Carolan Ave, Burlingame, CA 94010 Phone 415-348-8114
Fax 415 348-8083
Fax 415 348-8083