Excerpt: Those who watch the DVD writers market will have seen DVD-R/+R speeds moving gradually upwards. Recent months have seen DVD writers climbing to 18-speed and, in the case of Lite-On's LH-20A1P , 20-speed. But how important is DVD-R/+R recording? After all, 16-speed was already pretty fast. Wouldn't we be better focusing on the 8.5GB double-layer DVD-R DL and +R DL formats, where the eight-speed performance of typical drives leaves a great deal to be desired?