It's largely down to reading good reports on Cd-Rom Guide about this drive that I bought one, I feel it only fair I should post a few test results to help others.
Test system hardware:
Celeron 633@1Gig
Gigabyte GA-6BXD Board
750 meg mixed ram
3x 120 Gig Ibm Deskstars
1x WD 20 Gig
1x Cheapo Aldi TV card
1x 32meg hercules graphics card (PCI)
1x 64meg hercules graphics card (AGP)
1x Cheapo raid card
1x Plextor 1210a
1x Cheapo NIC
400w psu
Test system software
XP Pro
Stomp recordnow max
Many other programmes...
(running Abyss web server and BPFTP all the time)
First thing I noticed was that my favourite bit of software Prassi wouldn't recognise the drive even after updating to the latest PX engine wheras Stomp saw it after the PX upgrade.
First: tried formatting all my DVD-RW's (White label 1x), no problem and despite showing only 1x (which the disks are) seemed to format far faster than the Pioneer A04 which it replaced.
Second: burned a "backup" of Signs onto cheapo (yellow top) princo 1x media, burned this at 2x with no errors.
Third: Made a "backup" of League of extraordinary gents onto Datawrite (Yellow) 4x, worked at disks rated speed no errors.
Fourth: "backed up" Dreamcatcher on Datasafe 2x (white with silver band ritek dye?), worked at rated speed with no errors (same disk would only burn @ 1x on the pioneer).
Fifth: Backup of Lion King 3 from VOB's on another machine on my network onto cheapo 2x overprints (Ritek G03 dye) and despite the router showing a lot of packet collision again no errors.
All Movies backed up with DVD Shrink 3.1 (main movie only).
Datasafe 4x from Bigpockets
Cheapo princo 1x from same (some coasters in this batch on A04)

Rest from SVP (no coasters at all)
Very pleased so far
hope this helps some others