No search = little info.
I was over at Office Max and they had the Pacific Digital Mach 52 on sale, etc. Turns out the manufacturer is Top G. The impression I get is that they stink.
Also, the Norcent 52x is onsale at Best Buy, and is actually $10 cheaper. So which one sucks less? I didn't know about the Norcent until I found this site.
I'm kicking myself for not picking up the Cendyne relabeled Lite-On 52x when it was $40.