DVD 4x compatibles 8x

Below is the official list of the DVD+R 4x compatible 8x with the Plextor DVD burner.
Mitsubishi Chemical: DTR47U1 & DTR47U5.
Ricoh:DRD-4XPC, DRV-4XPC, DRD-4XCW10, DRD-4XCW5, DRD-4XPC5, DRV-4XCW5, DRV-4XPC5.
Taiyo Yuden: DVDR+D47TY & DVDR+D47TY5P
If you are seeing in a supermarket a guy with a magnifying glass to read the reference number on DVD box, then you can conclude that he/she has bought a Pextor