I'm a MK user and a consultant! LOVE the Timewise series. Have been using it for about 6 months. (40 yrs old). I use the cleanser, the night and day solutions, and the moisturizer! I also use the Microdermabrasion set a few times a week also. Please feel free to ask any questions you may have!!
I can tell you that the set you have referenced in the link will be updated and available as of 3/16/06. The SPF is increasing to 25 in the day solution and will also have antioxidants and the night solution will contain more (and bigger) Nutribeads which hold the various vitamins and botanicals.