How to test HP->Liteon flash

Hi guys,

just bought a HP 1135i PATA 22x dvd writer. Windows shows it as a 1135r with LH25 firmware.

I’ve flashed it with Liteon iHAP322-9 firmware, and updated it to latest 6L1H firmware.

SmartErase works now, even though the box did not advertise this feature. Now the question is…how do I test whether it burns good? Have lost touch with the whole disc burning scene. Bought this to replace a DW1655.