@rdgrimes, actually I have found noticeable differences between some Memorex RICOH and CMC packagings.
Memorex has stopped packaging RIOCH's with gray spindles on the 50 packs.
This makes it a little more difficult to determine a RICOH spindle but not impossible.
If you want Memorex RICOH, look at the bottom of the spindle and make sure it is smooth and shiny (not textured). Also the clear spindle 'bubble' on RICOH discs is smooth and circular.
If you're looking for a 25 pack, I have still seen many gray spindled 25 packs, which are RICOH.
If you want CMC pick a package that has a noticeably thicker spindle base. Also, the clear spindle bubble on CMC discs is "polygonal" with some noticeable flat edges (it is not one perfect circle).
Of course, these packaging styles may change without notice so YMMV big time here.