Bought the 1300 yesterday and 50 discs of Datawrites DVD-r 4x.
After having lots of troubles (see my post in http://www.cdrlabs.com/phpBB/viewtopic.php?t=10754), i returned the drive, and got a new one.
Fortunaly i bought some Datawrites DVD-R 2x also when i got the new drive, since these were the only ones that turned out to work with the new drive. There were probably nothing wrong with the first drive i got.
So... don't buy Datawrites 4x.. not yet at least.... Maybe they'll fix it later on with a future firmware upgrade