Excellent thread GUNG! I've used Apple Care on my Minkoffs too and it works well. Another alternative:
Lovin My Bags Leather Care Kit (this one is the kit forumlated for Balenciaga leathers).
Like Apple, a little bit goes a long way. It's a more expensive than Apple, but I think the cleanser is a little gentler on delicate leathers. This doesn't pick up color as much as the Apple cleaner can with some bags. The moisturizer is very similar to Apple and does leave a soft, silky feel. Pro-Treatment functions like a rain & stain spray, only it is in a cream form rather than aerosol can. Good alternative if you don't want to use aerosol or don't like that smell (my SO HATES the smell of the Apple spray so he's relieved I ran out and am using the LMB stuff).
The 2 LMB products that are unique are the Shine Restore and For Handles Only. If you have one of the shinier RM leathers and it's gotten a little dull, Shine Restore will do just that, make it shiny again. Works GREAT on my dark gray and wine bags. For Handles Only is a protectant for the handles against darkening and wear from the oils on your hands. A must for lighter handles or anyone who is afraid of oils changing the leather.
ETA: Magic Rub erasers can be found at any art/school/office supply store, and probably even drugstores. You can use any white plastic eraser.