Sony blank media

OK, I am in Canada and went to London Drugs to pick up a 100pack of Sony +R blank media as they have them on sale for $19.99. I noticed that the -R has 2 labels that are different one is a new style label and one is old style label but the old label is MIT and the new label is MIM. Has anyone tried the MIM and know what the MID is and if they are any good. I only use TY media and some verbatim but still buy the cheap media when on sale for everyday use.