Amazon is selling the BW-16D1HT with a $25 mail-in rebate from ASUS. They had a rebate through the end of January and they've now put out a new one through the end of February. After taking the rebate into account ($83.99 - $25.00 = $58.99) the price is the same as the LG WH16NS40 on Amazon. ASUS might not be as quick to update the firmware on the inventory versus the LG drives.
I can only find the rebate form that is good through the end of January when I click the link at Amazon. Do you have a link for the rebate that is good through the end of February?