Marantz have hosted their little party for the above models (and the NR1501) in the US. Marantz Hosts SR6004, SR5004 and NR1501 AV Receiver Reception: BigPictureBigSound The suggested rrp for the sr6004 has been £799. Not sure about the sr5004 - probably £599??. Look good to me! Obviously the big issue some have with Marantz is their inability to apply Audyssey EQ when bitstreaming audio - I doubt this has changed but, maybe it has? Full specs from Marantz website Marantz America | NR1501 *** COMING SOON *** Dolby TureHD / dts-HD Master Audio AV Receiver Nice 20,000 microfarad capacitors in the sr6004 too. Something you don't often see put in the spec sheet for av receivers.