TY/Burnmaster CD-Rs--any good?

These guys are offering 500 TY CD-Rs and 500 paper envelopes for $89.96 + shipping:

Am-Dig link

Anyone have any experience with these disks? I’ve ordered from American-Digital before and their customer service is excellent (usually get next-day delivery to NJ). But it would be good to know that these Burnmaster shrink-wrapped discs are good quality before investing $100+.