Don't buy the Taiwan discs. Lots of people say "didn't burn a single coaster." Same here. But those successful burns rapidly deteriorated. Two DVDs I made can no longer be played without numerous glitches in any of my DVD players (Samsung, Apex, and my Lite-on drives in my PC).
They worked fine at first, but they are almost worthless now. The other 8 from that 10-pack were used to store data. Those still appear to be readable, but I can hear the drive struggling to re-read sectors. Buy the Japanese ones.
Personally, I just buy Prodisc now. From what I can tell, Pioneer's certification isn't just hype. The discs work and they stay working. They read well in everything, including my X-Box. And perhaps best of all, they are dirt cheap, often about $30/100. I would grab Fuji TYs, but other than that, it's Prodisc for me.