Blue or black or green
 

Now my system has be modified, NEO/16Mb Mega Memory, it plays backups, though I am a bit concerned with speed of load.
Im using black CDs. Would it be better if I used blue coloured discs - Verbatim ?
Cheers for any help,

A black CD is a heck of a lot of absorption for the PS2 laser to see through. Try a Blue or a Green (doesn't matter which at all), burn at 4x (but no more than 8x). If the problem persists, then the laser may need calibration.