I generally use TDK or Fuji Film CD's. I've had one error that I can remember in three hundred or so disks and they usually have a rebate offer making them affordable. If you're sending me disks so long as they sound good and are error free I really don't care what brand they are. I also don't mind you writing on my disks (so long as I can read it), but I will not write on your's. Please NO LABELS!!!!! I don't think many people use them but they get stuck in the CD player in my car. I've been known to mail in fiber padded envelopes that I've read some people don't like. I've never had a problem with them, if you do please let me know and I can accomadate you with a bubble mailer. I also use paper CD envelopes (one disk per) and have had no trouble. If you insist on clamshells it will probally take me a couple extra days. IIf you have a quality question feel free to ask, I have a hard time keeping track as I listen to most music in my car and forget to make notes. I'm also not a real good grader. If I really like the tunes a B quality might become an A just because I'm enjoying it so much, or vice versa. Sorry if I lead you astray with an A that should be a B. Last but not least I try to trade at least six disks at a time. Envelopes aren't cheap and it saves in shipping costs so if you see a show on my list and want to line up a trade look for another show or two (or ask for a suggestion).