Shop4Tech.com has the new NEC ND-3550A 16x Dual Layer DVD Writer Black for a low $36, free shipping via coupon code "Techbargains10" - Search for "ND-3550" - Exp 3/29 - Tax in CA.
Now burns Double Layer DVD-R DL at 6x
Hack em into a ND-4550
Now burns Double Layer DVD-R DL at 6x
Hack em into a ND-4550