Welcome to the forums, tmyc.
If those are the 52x JVC CD-Rs, they're the best CD-Rs currently available IMO. Taiyo Yuden 8x or 16x DVDs are also quite good; the +Rs burn slightly better in many drives, but either are more than adequate. For BD-Rs, if burn quality is important then I would suggest getting either the Melody 4x BD-R or Panasonic 4x BD-R; the Panasonics are some of the best currently available, but the Melodys are quite good and very affordable. I used to have very good luck with SmartBlu 4x BD-Rs (made by Falcon), but their quality appears to have gone downhill.