i have the 8160b, as you may have seen it's a 16x10x40 CD-RW
It does not support UDMA, but will run in UDMA mode 2... my particular one is kinda picky about CD-R media when burning audio, consequently I only use Fuji-Film/Taiyo Yuden or Verbatim DataLifePlus media.
This drive was one of the 1st burners(if not the 1st) ever to support burning a 99 minute CD (as shown by www.tomshardware.com
I think my drive has been very reliable and dependable. Since using this drive I have purchased two more LG burners and feel pleased with each purchase.