BCCHardware has put together a review of Plextor's Serial ATA 16x DVD±RW, the PX-755SA. Here's a sample of what they had to say:
On the plus side, this drive is ready for SATA only motherboards. Did I mention this drive is quiet? Even with silent mode turned off this drive is significantly quieter than the PX-716AL. The asthetics of the drive are pleasing and the tray functions graceful. This drive did everything I threw at it and proved it's a decent reader, especially at reading damaged audio discs. As with most other Plextor drives, this one is picky about media and for good reason. Professional drives require professional quality discs. You do get what you pay for and with Plextor you get a lot of extra fine tuning features that other drives don't.
If you'd like to read more, head on over to BCCHardware and check out their review.