For comments on my Mitsubishi 82742 vs. my seven-year-old Hitachi 65S500, go to the Mitsubishi 2011 thread. See posts interspersed (as of this writing) from number 3588 to 3598. They may be relevant to your Hitachi RPTV. Note that I compared my Hitachi, which is 1080i (using an HDMI out to DVI in cable), to the Mitsubishi's performance at both 1080i and 1080p.
Music room: McIntosh MA6500 integrated amplifier, Cary SLI-80 tube integrated amplifier, Quad 99 preamp, Quad 909 power amp, Acoustic Research AR9 loudspeakers, Yamaha CD-N500 CD player, Teac UD-503 DSD DAC, Phase Linear 8000II linear-tracking turntable.
Theater room: Panasonic TC-P65S60 plasma television; Yamaha Aventage RX-A2020 (preamp section); Adcom GFA-5503 and GFA-5400 amplifiers; Polk LSi25, LSiC, and LSiF/X loudspeaker system; Velodyne FSR-18 servo-subwoofer.