The -only- caveat I would mention is regarding Cinema; if it is hyperthreading aware, then you may want to consider the P4 just for the enhanced performance it would give it. Otherwise, AMD all the way. I would be very leery of the upcoming EMT64 chip from Intel. Unless they have changed things a lot, it is going to be more a pseudo 64 bit chip; the one they have taped out now only has a 40 bit bus with multiplexing to imitate 64 bit buswidth. They may have changed it...but considering the thermal issues they haven't solved with Prescott, and the fact that if you get a socket 940 motherboard you will be all set for the dual core Opterons due out next year (real dual cores with hypertransport links).