cdr type

[dansheen]

Could someone explain to me what the type means with cdrs and what the difference is between different ones?

I used a cdr today that feurio said was type 1. Yesterday with a different brand it said they were type 4. The first one is by one of the companies in Japan listed as good and the second is by one of the medium companies. But is the type more important than the manufacturer? They are both data 80 min cds but i use them for music.