eCOST.com has a Sony Dual RW 4x DVD+RW/-RW ATAPI(EIDE) for $339 with Free Shipping. You won’t have to worry about the different DVD standards since this will do both.
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- Minimum 4x2x8 DVD+RW/-RW Recording and playback n
- 24x10x32 CD-RW recording and playback^ATAPI(EIDE) Interface n
- Burst data transfer rate: 33.3 Mbit/s max. n
- Random access time: 160 ms (CD-ROM), 200 ms (DVD-ROM) n
- Buffer memory: 8 MB