My G5's Superdrive (early 2004 model) clunks away unable to mount at times. Other times it will burn a DVD only later to not recognise it though the DVD will have burnt and be OK on another Mac. It has been doing this on and off a while so I'm looking to replace it. The question is what with? I can't find any good press on a non Apple installed Combo CD/DVD and wonder if any others have been through this and found a solution. If need be I will replace it with a DVD drive - but would like to retain the combo capability if possible. The thought of running third party firmware for the new drive is not particularly inviting but any positive experiences or suggestions greatfully accepted.