I agree with Will about Sony being a good drive to have. Also I have found that BenQ or AOpen to be fast and trouble free.

It depends alot on where you are from as to how much drives tend to be.

I can pick up a BenQ or Sony DVD+/-RW DL for about £30 sterling (DL means that they write on Dual Layer (8GB) disks) They will also write DVD RAM aswell.