Some fair points, but one major thorn in the side of your argument is that to get the same features as the JVC on a native 4K projector you have to go with the VW520ES, which is almost £3.5 - 4k more expensive than the X7000 with E-shift4. Given there isn't a massive night and day difference in resolution as per the review results, that's a lot of money to drop right now. Plus the X7000 is £2K cheaper than the outgoing X700 which makes it a best buy at the price vs features point.
Also I zoom for 2.40:1 on a 110" scope screen and can't see the pixels from 8ft back and doubt it is an issue for anyone doing similar.
I have a 2.00:1 screen. When I zoom it to fill the central 16:9 portion and mask I effectively have a 113" 16:9 screen. And at a seating distance of about 11.5' I can
just see pixel structure
very occasionally on
some material (it has to be the right material, including the right colour). It's one of those things, it's so rare that it doesn't bother me, but it's just there, very occasionally.
I find the experience very similar with my 55" OLED TV in the lounge. If I sit on the floor in front of my sofa (which is very slight closer in relation to screen height than the seating in my cinema room) I can clearly make out line stepping on some objects. If I sit on the sofa in my normal seating position (slightly further away, proportionally, than my cinema room seating), I can't.
Bizarrely this may be due to me having less than perfect vision. Because of that I wear glasses/contact lenses. For 20/20 vision you're supposed to be able to make out the 3rd from bottom line on the eye-chart. But because my sight isn't all that bad, mine is corrected so that I can just make out the bottom line.
So my corrected vision is a little better than average, which might account for it.
Sorry - I should say that I agree with your points on price. I was talking more about buying a 4K projector vs 1080p, rather than native 4K vs e-shift.
I suspect that, even taking e-shift out of the equation, the JVC will be a very good 1080p projector for the price. So, with added faux-4K, that makes it a great buy. The Sonys are great, but...my oh my, they're not cheap.
Steve W