I have to agree with adderal, I've been through at least 300 of these TY value line discs and I haven't had one problem. I don't have a drive that can do quality scans but from what I've seen they are 95% of the TY grade-A...TY is the best for a reason, i.e, their EXTREMELY high standards.
Also, I wouldn't call them "poorly shrink-wrapped". They come tightly wrapped, they dont come apart even in UPS rough shipping, and I've yet to see one scratched. If you buy them shrink wrapped, just make sure you've got a cakebox or spindle to put them in/on.
They say 4x, the TYG01 I've got burns at 8x in my NEC 2510. Chas posted some scans and came to the conclusion that they like 8x better (at least on NEC's). I've heard the G02's will burn at 12x on capable burners.
If you are going to go with this media, you owe it to yourself to check supermediastore.com and shop4tech.com first. I'd go with supermedia first, then shop4tech a far second. The first and last order I put in with meritline was cancelled due to some blatant bait-and-switch.