The Hong Kong/China discs are AML002 (+R) and UME01 (-R). I've used AML002 from a couple of brands and the UME01 from 'Playo' brand. I've burned hundreds of the AML002 discs and maybe 40 of the UME01 discs and while they aren't great, they burn decent and I've had zero deterioration issues. Both typically burn with between 800-1500 total PIF, no high peaks, and low PI totals in my Benq, NEC, and Liteon burners so I can't complain at all for being cheap media. I wouldn't spend close to $20 per 100 with all of the deals going around, but if you can get them very cheap they are alright.