Ok, this is strange.
Taiyo Yuden is supposed to be some of the best media you can find. I've never used it before, but I decided I might as well, when I found it last weekend at a computer show. CDR identifier identifies it as true TY, and according to the Leadout (found this with Nero), it's 48X rated.
I'm using a Liteon 24102B for the burning. Firmware 5S54.
But here is what happens after burning. linked are tests from cd doctor, with 4 different brands of media. (the actual data is different on all the disks, as I don't have other blank media in front of me, but the sizes are rather close on each).
This one is Taiyo Yuden.