one of the answers:
the disks Andrew -- with audiostream; the cost audiostrobe the decoder is virtually indistinguishable from the same inner-pulse; (Yes, of course, drives effective and without light, but most of the people find that the light adds 50-60% efficiency -- I would say -- impressive, but I am not most people

.)
-- MM (the same inner pulse) has a sea of built-in sessions -- MB. they are not as efficient as discs Andrew, however -- can be very useful (there are people who claim that the creation of Andrew is very cool, but they like something simpler);
-- MM -- programmable, and although those opportunities it in some sense limited (in comparison with the Programs -- main feature -- the programming of light on the computer is available only through audiostrobe (flashing screen, I would have cut off immediately), which requires the purchase of the commercial program and again, the same decoder, stands as the inner pulse

).
In General, you-bi-Paradise-the. Well, if you are already in the way -- try to get Your money is not lost

.
PS: because, unfortunately, too many people "invested" in MM, this case is almost immediately abandoned -- to my taste -- a reasonable solution to begin with-buy a couple of CD AP -- e.g. "Explorer" and anything else (not all normally accept a session with narration) and "to get acquainted with the technology." Simultaneously trying to read what is written. If you rolled -- you can consider buying MM. And/or more substantive to ask.
But based on the -- the die is cast...