From what I have seen, most new writers that are capable of recording at over 4x-speed (with the exception of the new Lite-ON LDW-811S and maybe others?) turns to the Z-CLV writing method for their higher speeds. Why can’t manufacturers go to P-CAV or CAV? I feel that burn speeds will suffer because of the writing method.
On the other hand, I own a nice Lite-ON LTR-32123S with XS0X firmware, so I guess I can’t complain!