Get an independent CD-ROM drive, the CDRW has a life span, it does not mind if it is burning or just reading, it will eventually wear out, so better get an independent CD-ROM drive.
I recomend you to get an Asus or Toshiba CD-ROM drive.
If you get a DVD-ROM drive you may have problems with audio extraction speed. I think there is no DVD drive in the market allowing 16X audio extraction, so regardless of the 16X burning capabilities of the CDRW drive, if the DVD reads audio at, for instance 10X (remember digital audio extraction is slower than the data reading speed), you will just be able to burn at 10X, a complete pity...
I've got a Plextor 12/10/32A, my AOpen 48X CD-ROM drive has 8X DAE, so I've got to burn audio CDs at 8X... a waste of time.
The best way to fight boredom is sleeping