I've already discussed general pricing, so let's look at the immediate competition - consisting of the BenQ HT2550, and Optoma HD50, also with RGBRGB color wheels, as well as the high res DLP chip models, with the same: Optoma HD65, BenQ HT8050, Vivitek HK2288...
I give the slight edge to this Viewsonic PX727-4K over the near identical BenQ HT2550, although note that the BenQ also supports 3D, that the Viewsonic lacks.
The Optoma HD50 is also new, with it, or the similar HD51A being reviewed in July. Typically - but I can't tell at this point, Optoma typically (or at least often) uses a slower color wheel than the BenQ HT2550 which is sharing the same color wheel with our Viewsonic. But I can't confirm it. But it will be different in some other ways, for example it has 3D, and more zoom lens, 1.5:1, as well as having a slight amount of lens shift, but lamp life ratings in hours are lower, and there is more.
Of course as soon as we review the Optoma we'll give our final opinions on which are are your better choice.
The rest of the units we've reviewed so far, use the higher resolution DLP chip (still not native - non-pixel shifting 4K), are more money and just slightly sharper, if you are sitting close enough. I expect these lower cost 4x pixel shifters will rack up the bulk of sales until some emerge (next year) with some black level performance. So as long as the 2X DLPs like the Optoma UHD65, Vivitek HK2288, the Acer, etc. offer only a very slight difference is sharpness, most folks will opt for projectors like the Viewsonic to save $500 - $1000. So far I only have one issue with that.
The extra - and a bit too loud - hum from the 4X pixel shifting will turn off some of us, but that would seem to be the case with all of these 4X pixel shifters.
Now if you don't care about 4K content, and "future proofing", you can choose from many 1080p projectors around this price, for example the Epson HC3700 in the image player below, is a good alternative. No 4K but dramatically brighter, and excellent color. Definitely better if you have a bright room. Of course there are dozens of other non-4K capable projectors around the $750-$1500 price range.
Keep in mind that projectors with similar feature sets (DLPs with similar lenses, and brightness),
From the left (1st): Passengers 4K HDR
Viewsonic PX727-4K, BenQ HT2550, Optoma UHD60, UHD60 vs HT2550 (Optoma on bottom), UHD60 vs Vivitek HK2288 (Optoma on bottom), Epson LS100 (1080p laser), BenQ HT9050 (their high end PJ), Epson HC4000, Epson HC5040 vs Acer V7850 (thus 9 projectors in all).
[sam_pro id=1_65 codes="true"]
Victoria Secret - 1080i (obviously no HDR)
HT2550, Vivitek HK2288, Opotma UHD60, Epson LS100, Optoma UHD65, Sony VW285ES ($5K, true 4K), BenQ HT9050, Epson PC4040, HC3700
Of all the projector images shown, in this player, all are 4K capable projectors of varying native resolutions, with the exception of the Epson LS100 (to include a laser projector), and the Epson HC3700, (costs about the same as the Viewsonic), both of which are 1080p and do not support 4K, so are showing 1080p content.