I haven't really made any comparison for each product but I have listened to other parents and professionals about what works. When we were looking for a program for my dd the SLP who did her testing recommended Earobics because it was visually a less "little kiddish". This was important because my dd has a high IQ and refuses to do anything that would be deemed "beneath her".
I know people who have used Lindamoodbell and liked that program. Haven't heard many who like FastForward, read a book on the Tomatis method which has sprouted other programs such as The Listening Program (which we've also used).
So, talk to professionals and other parents using various programs and just pick the one you think will best fit your child's needs. Different programs may work a bit differently, so that is something to take into consideration.