I think that the Aopen 1608/ARR is a fine drive. I like the DL feature and am glad that it has bitsetting. I was misfortunate and got a spindle of pure crap media. A friend had TDK +R and I borrowed one for testing. Come to find out the TDK media is made by Ricoh and the chip in the Aopen is also Ricoh. So great compatability. I cannot use KProbe because I have no lite-on drive. But I do use Nero CD/DVD Speed which is a great prog for testing media quality. Here is a scan of my MP3 collection on TDK DVD +R:
Very good scan!! The best yet!
Now here is a scan of the Memorex +R:
Both are great. But I like the TDK much better.