X25-M 80GB: $270 X25-E 64GB: $890 At that price you can buy 3 X25-Ms and still have more space. The real difference is in write cycles though: the X25-E can d

X25-M 80GB: $270 X25-E 64GB: $890 At that price you can buy 3 X25-Ms and still have more space. The real difference is in write cycles though: the X25-E can do ten times as many as the X25-M.