they were highly rated a few years ago when they first tried to break into the optical drive market, and pushed out a lot of publicity bumph. The chap who was president was indicating that he wanted to be the biggest manufacturer of optical drives in an unfeasibly short period of time. The press latched onto that and applauded him - ignoring the drive quality....
since then things seem to have gone pear-shaped and they put the optical drive business into a JV - I think with Philips, who then closed (or at least ran down) their Hungarian plant to concentrate on sourcing from China.
In reality the quality isn't there. Bit like their laptop chargers - they die prematurely as well