As you may have read from previous messages, different people had had different experiences with different media and different CD recorders. My suggestion to you is to test read alot. Try different brands, but the important thing is to, burn different things, data, audio, multi-session, using many different methods, and many different burning programs...in fact try using all the features that came with your burning program. Then to test if the CD was good, you should try to read it on MANY different cd-rom, especially the "cheap" ones. Can you play a silver/blue audio data on a 4x cd-rom? Can you play a gold cd on the same 4x cdrom? If a media can be read by a crappy CD drive, then it's a pretty good media. As others have mentioned before, if you see "gold dye" or "gold/gold" or "gold on gold", then the chance of that CD being readable by ALL cd drive is HIGHER than those blue or blue/green or silver/blue (worst) types. Not to mention they DO last longer. My experiences of gold cdr in car cdplayer had been more favorable than the silver/blue ones. My personal favorites have been the golden Kodak, and Imation. But those are more expensive than the generic name brands. If you're just burning audio stuff for your personal enjoyment, or for temporarity data transport from one computer another, use the cheap ones. If you have important data that you plan to keep for posterity, then go ahead and invest in a couple good quality gold/gold Kodaks.
An my last words, to be more "opinionate", so to speak--Just as one should NEVER buy "BTC" products, don't ever by "GQ" (Great Quality) brand of CDr. They suck. Period! Wanna guess what color is the dye?