BenQ DW1670 question

Whats new/different with the BenQ DW1670 compared to the DW1650 ?

1670 has Panasonic chipset, 1650 Philips
1670 can burn RAM, 1650 not
1650 can use SolidBurn, 1670 not
1650 can do quality scans, 1670 not
1650 can burn with 12x, 1670 not(only 8x or 16x)