I haven't used them both, but I just made the same decision myself. I chose the Marantz. Doug says it has better build quality and also that the AD chip in the 671 is better than the hdp2. You'd have to ask him for more details. They both have similar features although the hdp2 has the timecode feature. I think it's an option, or a future option for the 671. The stock 671 is a little cheaper at 830 vs 899 for the hdp2. have fun-kevin