Ah, I was confused by some reports of Mb/sec vs MB/sec. It escapes me why any hardware maker would report Mb/sec instead of MB/sec. So BD is not as fast as I thought. I question how well they will work at 4x - 8x BD speeds given the extremely close tolerances between disc and laser, and the data density itself. I'm talking about burning, not ROM speeds. There'll need to be some major advances in dyes and disc technology. I forsee a lot of expensive coasters.