best dvd burner and diference in media

[ED!]

So you recommend TDK's for store bought? I know they have those here. I'll send off for some RITEK's if I have to, but it would be nice if I didn't have to go through that hassle.

And the GQ DVD-R's are junk. Wouldnt read in my weak lasered machine, or in another machine the solderer had working. OPTODISC's and this other disc read gangbusters. I heard reflectivity is a BIG thing, and these GQ's have purple underneath not silver. COMPUTER read them great, but I'm not suprised about that one.