The "data" models generally suffer lower bandwidth than the "Graphics" models, but an 801s _may_ provide enough for 720p. This model is 75 MHz and the old CRTCinema "specs" page says it's good for 1024x768 but you may be able to get 1280x720 out of this PJ.
I've got a RetroData 801 that I'll be playing with tonite. I've run this at 720p and the projector was apparently able to resolve this, but I don't know how long term stability will be.
FWIW, I picked up a more desirable BG801 (non'S') for about $500USD delivered in January. Depending on your location the market could be much tighter (those in Europe, Asia, and Australia seem to suffer price-wise.)
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