Burned my first 2 backups at 2.4 x and did data verification in Imgburn all went well with both Prey and DMC4. When i stuck Prey in it recognized it right away, as soon as it got to the title screen, i got the dirty disc error. So i tried DMC 4.
Dude it sounded like my laser was having a lightsaber dual with vader inside my dvdrom. I immediately took it out , afraid it was damaging my drive. So just for shits and giggles 15 minz l8r i tried Prey again, now it said tray open, and took 5 minutes to boot. DMC4 booted finally, but the laser sounded like it was havng serious trouble reading it. I tried my originals and they worked fine after this mess, so it's not the ixtreme firmware or drive.
So i'm pretty convinced people aren't overdoing it when they say memorex sucks for 360 games. THESE DISCS ARE CHEAPER FOR A REASON. I had to argue with the manager at Radioshack to take them back, good thing they did.
I'm picking up Verbatim discs tomarrow
