I perceive no audible differences if any exist at all. The main issue for me is media reliability. My burner (yamaha stand alone) makes coasters out of the blue memorex CDR's about 75% of the time. All other brands work fine 99% of the time. Lately, I use some low rent CDR's branded as "GQ" which stands for "Great Quality" (translated from chinese) and cost about 25 cents ea. including the jewel cases. They work fine.
