Was i surprised. Not that you'll get a successful burn each time.......but you CAN test burn (i did it with nero. it doesn't acutally burn, but it finds what X it can copy at). and it showed 4.6X!!!!!! As long as pioneer...err..they already screwed riteks using firmware 1.32 but as long as the new sony doesn't do this, you can use the riteks and burn 4X.... (time for me to get new burner I screwed mine up by using firmware 1.20 too long -_-~~~)