The DVD+R format is divergent from the DVD-R format. Hybrid drives that can handle both, often labeled "DVD±RW", are very popular since there is not yet a single standard for recordable DVDs. There are a number of significant technical differences between the dash and plus formats, although most consumers would not notice the difference. One example is the ADIP system of tracking and speed control being less susceptible to interference and error than the LPP system used by DVD-R, which makes the ADIP system more accurate at higher speeds. Also DVD+R(W) has a more robust error management system than DVD-R(W), allowing for more accurate burning to media independent of the quality of the media. Additional session linking methods are quite a bit more accurate with DVD+R(W) versus DVD-R(W), resulting in fewer coasters (damaged or unusable discs that are practical only to put under cold beverages) due to buffer under-run and multi-session disks with fewer PI/PO errors.
