That is a "+R" - not a dual format burner.
+R media is more expensive than -R media.
I have an Optorite (avaialble for under $125 these days), which is hit-or-miss, it seems (I got a good one), but the Pioneer A06 dual format is selling for under $150, I think.
Until the dual-Layer drives come out next April, a decent, inexpensive Dual format 4X DVD-/+RW burner is the way to go.
The big problem with +R for Xbox users is the Samsung-supplied DVD drives do not support DVD+R discs. All Xbox drives support DVD-R