Well Sony drives are basically rebadged LiteOn/BTC Drives.
LiteOn CD Writers were awesome,thats why Sony CD-R are good.
I dont say that LiteOn DVD-RW are bad but they perform well only with good quality media.
I myself had an Iomega drive which was a 812S drive.
Flashed numerous firmwares but the C1/C2 scans were not at all good.
I tried Moser Baer DVD+R 4X media which is a very good media,gave bad results.
So i didnt even dare writing on cheapo media.
Basically in DVD Writers or in DVD Writers in particular,the write quality is more important than anything.For example if the write quality is bad,meaning C1/C2 errors are more then these DVDs sometimes are unreadable over period of time.
Thats why i say stay away from Sony or LiteOn.Its better if i refrain from speaking anything about BTC....
These problems are not experience in the models i recommended and pricing is also quite in the same range for all drives.