There will be no mandate on CDR type/brand. This is between you and your branchline, but we have a list of recommended media types/brands.

Preferences vary wildly, but in general the consensus is to stay away from CDRs made in Taiwan. Look for CDR media that are made in Japan , the US and Ireland.
- Imation
- Verbatim Datalife Plus (not valuelife!!)
- TDK (Dale doesn't like TDK!)
- Memorex Platinum 74 min or silver-top 80 min (NOT GOLD!!)
- Fujifilm 80 min
- Fuji
- Maxell
- Yamaha

Here is a link to CDR info for your edification: CDR-FAQ

Craig Chambers has some recommendations of his own for you to consider.