Ok I'm familiar with the whole DVD-R/RW and DVD+R/RW type blank media. However from standard knowledge I'm aware that these discs will typically hold 4.2GB discs as well as on one side. In an April Macworld magazine in the advertisement section I saw discs that had up to 9.6 GB capacity per side and were double sided. Anyone know of these discs and their compatibility with Macs?? thanks.