This is just my opinion, but I think DVD-RAM is not going to be the format of choice in the future because it is not compatible with existing DVD-ROM and stand alone DVD players whereas the DVD-R and DVD-RW are backward compatible. The DVD-RAM I believe is available on both Macs and PCs, but the DVD-R was first introduced on Macs but companies are now making it for PC (Pioneer). Any way, my money is on DVD-RW, but we'll have to wait and see.