spiceboy, test your discs at 8x in CD-DVD Speed instead of Maximum speed. You might as well update to the latest version of the program while you’re at it.
I’ve used fake -R MCC on my 1640, WOPC and Solidburn provided no benefit for my discs, although changing the write strategy to INFOSMART01 improved results for others, although I don’t believe their results were specific to the 1640 (I haven’t bothered to try changing the write strategy in my 1640). SB and WOPC may or may not help in your case, although I honestly doubt you are going to see much, if any, improvement since they are cheap fake discs to begin with. Your burn is good for fake media and, if the discs are stored decently and the discs remain stable over time, are perfectly useable. However, stability of the discs is unknown though and I would not use them for important data. Mine have been stable so far, but I’ve only been using them for a few months.
Media I’ve used that was advertised as Sky in the past has been really cheap stuff, including fake Maxell media codes, AN31, etc. Some of the discs were incredibly translucent, I could easily look through the discs in good lighting. I think that all of the discs I used were made in China media from Infosmart, regardless of the media code. I think that getting anything good such as CMC or Prodisc would be a lucky fluke, it’s probably almost entirely made in China stuff. To my amazement, even most of my earliest burns about 3 years ago with this ‘Sky’ media has remained stable and readable to this day, even the discs I can visibly see through are still readable.
I wouldn’t actually suggest anyone go out of their way to buy these, but it’s a positive sign that most of my discs have remained stable. In the future, I would only suggest using these sorts of discs for less important burns, such as discs you are giving away, temporary data transfer, etc. That’s what I use these types of discs for and they serve such uses fine. Get better media for anything you consider important data.