i use all brands and unbranded
depends on speed u write
your cdwriter make model
HOW U LOOK AFTER THEM
verbatim r well liked
very good at taking abuse from the kids
take look this taking from article written by our very own "charlie"
3rd paragraph gives direct answer but read it all
soon full document posted on net u should read it all
201 How is a CD-R physically constructed? At what speed should it be burned?
A CD-R is a recordable CD. All such CDs are constructed in basically the same way. The top layer, with the label, is non functional. Below it is a silver or gold reflective layer and this either makes the CD appear green, blue or gold-ish depending on the type of dye used in the light sensitive compound. Next is the chemical layer containing the light-sensitive dye that reacts to the laser when the CD is being burned. Below that are transparent plastic layers that protect the compound from damage. Unbranded disks tend not to have an extra coating on the bottom layer to further protect the CD. A deep scratch could reach the compound and physically destroy the data; any scratch could potentially deflect the laser beam and cause a read error.
With careful handling, there is no reason not to use an unbranded CD. A CD spinning in an ejected tray is not going to become scratched and thus degraded.
The burn is as good as the laser has time to make opaque zero bit (see 202 below). Thus on the very best branded media, it is advised not to burn at a speed greater than 8x on a modern burner . The other factor affecting optimum burning speed is the quality of the burner; a weak laser must burn at a slower speed; top name burners can manage the higher speed. The conventional wisdom is that a CD-R should be burned at 4x for the average burner and 2x if that doesn’t work. One should consider replacing a burner that doesn’t work at 4x or 8x.
When reading a game in preparation for burning, a pressed CD can be read at 16x or higher speed. A burned CD should read OK at the higher speed (read errors are detected because the “Abort on Read Error” setting must be used) but 8x is safest and 4x if you don’t know the origin of the CD. Ratchet the speed down if you get read errors and as a last resort, wash the CD in warm soapy water and dry with a tea-towel.