this is not the same topic as another 1 that I posted weeks ago.
from the above link, 3rd one from the top is the Taiyo Yuden That's CD at 48X, price at 2112 (2218 in red) yen.
The 2nd one from the bottom is also Taiyo Yuden That's CD at 40X, price at 1600 (1680 in red) yen.
what is the difference between these 2, besides the speed? As the price difference is double.