You do not require three different drives in my view. About every DVD -/+ writer will also function as a CD-RW. Also if you can find DVD/CD writers that will that will write to the three prevailing formats [DVD-RW, DVD+RW, and DVD-RAM] [I think Toshiba makes a version that will], why not go with it for one of the drives unless the cost outweighs the benefits. If you insist on three, make one external via USB 2.0/Firewire.
Gene K
