"Value Taiyo Yudens here": (I've heard various reviews about this media, some say it's great, others say it's 2nd rate for various reasons and not totally 'Taiyo Yuden' quality":
Don't get Ridatas/Riteks, those have generally gone downhill quality-wise and I think Pioneer does not recommend Ritek media for the Pioneer burners any more.
Taiyo Yuden's are the best. Some burners will burn 8x TY media at 16x with excellent quality. Made in Japan Fujifilm is guaranteed to be TY's unless something has changed. But also be aware ot fake TY's being sold around...quality ranges from ok to horrible.
I once bought a verbatim 10-pack and none of them worked properly. Some of the chapters of a DVDfilm would be skipped, I tried to back-up my MP3's on them but it was unreadable, etc.
I used Ricoh for a long time and they worked ok, but didn't always read very well. Now I use Maxell and I'm very pleased with those.