it may not be an ideal solution but you could shop for the best camcorder for your shooting needs and get a stand alone digi-8 desktop (studio) player/recorder which would allow you to play the tapes back to your uber screen tv and digitize the footage to the computer should you need to...
be sure the spec includes playback of standard and hi-8 tapes, of course.
if you can track down an old sony trv-120 those cool little digi-8 camcorders played old 8mm, hi-8 and digi 8 tapes and allowed analog passthrough and connected via firewire to your computer.
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