The Made in Japan CD media (Taiyo Yuden) is the best there is. There is not a shadow of doubt that Taiyo Yuden makes the best CD media (not RW) these days. So that choice should be a no-brainer
It's more complicated when it comes to DVD media. While 8x Taiyo Yuden DVD media, especially DVD+R, is of very high quality, and can definitely be recommended, their 16x media gets rather mixed reviews here and elsewhere. While my drives (BenQ 1650 and LG H22N in particular) do like high speed Taiyo Yuden DVD media, and I never really had a problem with the disc quality (bonding etc.) either, quite a few people have, and bad / mediocre batches seem to be more common.
I personally would still recommend 16x DVD media by Taiyo Yuden, but there are very good alternatives available, e.g. Verbatim MCC004 media (16x DVD+R, made in Taiwan or India). Usually those MCC004 discs are cheaper, too.