Strange... my Lite on 812S,which is just a 832S without DL support in the firmware, but identicle otherwise, was one of the best drives I ever had. It never gave me a coaster, and allthough I now use the NEC 3500 instead of it, it still works fine. It worked very well with TY02 DVD+R media, keeping PI below 8 and PIF below 4 every time, also did a good job with cheap media. I will admit however that when I upflashed it to an 832S it really sucked at burning DL, barely making a playable copy.

I can't comment on the 12xx or 16xx drives however, as I switched to BenQ/NEC due to better DL support.