That's a great burn. I wish i had such qualityburns with mine 1620. I always get a spike at the end of a burn. Nomatter what media I use. I get good burns but from the 4gig mark I get high spikes. (PIF: 300-500 en POF : 20-40)
Ps. My Benq is an upgraded one. 1600->1620->1620pro.