Originally posted by: Dyre
Someone want to fill me in on the differences and why it matter?
TYs have been known for their consistent quality. When you burn a TY, you can be pretty sure there are no C2 errors or worse unreadable sectors. Why are C2 errors bad? Depending on the use of the CDR, it may not ever cause problems. If you make a VCD to play in a standalone DVD player and you encounter even a single C2 error, you will see pixelation, more errors and the picture will break up badly and audio will go out of sync. If it's a data disc, usually the drive can overcome quite a few errors, but not unreadable sectors. I'm sure most people have put a CDR in their CDROM and heard it grind and grind. That's a symptom of many errors and unreadable sectors, making if difficult or impossible to copy data off of the CDR, it happened to me just the other day with a crappy CDRW. How about when your car CD player won't read the disc...bad sectors.
VCDs don't use error correction like data discs do. You can actually put an 800mb VCD on a 700mb disc.
In summary, for data any CDR will usually be fine (except for the really bad discs), but if you have a picky CD player or are making VCDs, then quality is important.