I agree with Bill.
I've always heard that DVD-RW was the more compatable format with more set-top boxes. Have to get back with you on this one.
Epo:
You could get the sony and also get an external USB 2.0 enclosure. It should work fine for burning DVDs because I believe the ATAPI drives connect at DMA/33 so that is only about half of the theoretical bandwidth of USB 2.0.
BRB, David