I found 20 packs (with color cases) on sale for $9.95 at my local Houston area Wallmart last month so I bought one. Been burning them in my PC for audio CD's (from mp3 & flac files) at 8x (Nero Burning Rom) for mp3's & 2x (flac files) using the free version of Winamp which won't burn above 2x unless you pay for it. All play fine in any CD player I put them in. Even my Durabrand portable player which has noise on tracks burned on CMC discs. The sony's play perfect in that player! Here is Nero's CD-DVD speed info. Manufacturer : Sony Code : 97m24s11f Disc Type : CD-R Usage : Audio Recording Layer : Dye Type 1: Long Strategy (Cyanine, AZO) Recording Speed : n/a Capacity : 79:59.74 703 MB Additional Capacity : n/a Overburn Capacity : not tested Notice there is no max burning speed listed. I haven't tried them above 8x so I don't know what the maximum speed is. 2x disc quality info. General Information Drive: CDWRITERIDE5232 Firmware: A030 Disc: Audio CD (Sony) Selected speed: Maximum C1 errors Maximum: 17 Average: 0.27 Total: 931 C2 errors Maximum: 0 Average: 0.00 Total: 0 Jitter: n/a Scanning statistics Elapsed time: 1:54 Number of samples: 3361 Average scanning interval: 1.02 sec Glitches removed: 0 I might post 8x results later. Oh this is with an Emprex 52x CDRW drive I was given. Haven't tried burning these discs in the Plexter DVDRW drive yet.