Usual rules: Prefer to spin DAT for DAT. Data grade by default - lets talk if you prefer highest quality audio tapes, as I use those too.. I trade CDs also - prefer SHN trades. High quality discs - any Japanese made work well (TDK, TY, etc) Send discs in sleeves inside a bubble mailer. For b&p: Send discs in sleeves, inside a SASE (bubble mailer!) and send them in an outer envelope. (No metered strips, must use stamps!)Include a note with the show you want, your name, address and e-mail addy. DAT tapes - unpack the blanks, etc. You DAT traders all know this stuff... MY most updated list is www.narachi.com/tapecdlist.htm