I'm thinking of buying a Denon 2910 or 3910 for use with projector & for music. Currently I use my sony RDR HX900 for main DVD playback, which is pretty good (haven't bought the PJ yet by the way). The thing is I don't want to have an obsolete machine in 2 years time. Should I carry on with my Sony & wait for a universal HD DVD which will play SD DVD's, DVD-A, SACD etc. or..... Splash out on a 2910/3910 now?