I have ran into a problem where I couldn’t re-write to a previous written dvd-rw disc (princo, I never had any problem with this batch and rewrites 'em many times before with the other dvd-r drives).
The disc was written initially on a toshiba r5002.
I am able to erase the disc using NERO on btc-1004 but when it comes time to write it just ejects the disc and complains the disc is not empty.
I popped this disc on another machine with the Toshiba drive and I was able to rewrite no problem.
So it seems, the BTC-1004 may have problem rewriting DVD-RWs. OTOH, I tested with a few DVD+RW discs and have no problem rewriting 'em.
My overall impression: The drive is well made in terms of build quality and hardware wise. The problem is the firmware is simply too immature and needs major work. I may keep the drive anyways cuz’ I got it for $79.