Speaking from vast readings around the globe (mainly French, from French experts), 4k/3D front projectors can give you "Magnificat" for less than ten grands and with a picture 120" across. OLED 4K/3D won't give you that size, and will cost you both legs. :b
Ask Chuck (audioguy) here, he has a JVC 4K/3D front projector. And it doesn't cost sixty grands (that's for the ultra high-end videophilia with theaters accommodating two dozen guests from Dubai and Abu Dhabi). ...Princes, Kings, Princesses, Queens, Presidents, Fashion Models, Actresses, ...all that jazz.
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Strictly on the TV front; experts generally agree on OLED, overall best picture quality winner.
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There are very high-end front projectors, expensive; and it's not to rip off rich people. It's for the very high-end clientele way above us.
With higher prices in the front projector's world you get the best lenses and the best everything else, generally. Research is recommended.
Quality costs money.
Today's projectors are vastly superior to the ones of five years ago. They also cost much less, and are up-to-date with the latest...UHD (4K). ...HDR, ...
JVC seems to be among one of the very best brands in front PJs, and affordable too. They have several models to accommodate all taste and all budget.
You can position a projector on a shelf (back wall), so you won't hit your head.
Like any piece of video electronics some maintenance and calibration is a good plan. And light bulbs don't last forever. And size matters.
OLED is a complement, a TV that you put behind the screen for those TV occasions (other stuff than real serious movie watching). My opinion.
This is a great subject, because we are entering a new and exciting era on moving pictures @ home.
...The era of 4K with everything attached to it (and there's a lot of stuff with UHD), including the death sentence of 3D.
We love high-end hi-fi stereo, we love audiophile music recordings, we love cinema from all around the world.
We're art lovers, creators' appreciators. ...In all aspect of moving music and images...deep deep down emotionally, fully immersed in all our senses and sensibilities.
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Last but not least: TVs in 2017 "crashed" 3D all together; not so with front projectors. My recommendation (personal): don't buy new TVs, only old ones with 3D capability.
Or buy 3D front projectors. If everyone would follow my recommendation; people like James Cameron would sell their boats and submarines to make more movies in 3D above the sky, aboard planes, helicopters, spaceships. And others would join in masses @ developing the best glasses-free 3D movie experience. The direction taken by the Hollywood movie industry and businessmen, is not the best one; it's what they think is most profitable financially. Money @ the disservice of true art. We are so behind that we look like a bunch of prehistoric mammoths. We can't even make proper cabling for our electronics.
{This is my personal opinion, only based on readings; a very flexible opinion as time and weather and nature and room's temperature change, and sun and moon and planets move in an orbital and gravitational force, and not based on ownership and personal experience. Those are just my thoughts, without definite science, without absolute, in all relativity, in my own words, in my own way as honestly as the rocks we can see in the clarity of the creek's water running.}
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I'm outside right now (26° Celsius) with the biggest screen across. All colors pure and natural. The projector was FREE. :b
And the best movie is playing; "Diurnal Animals" ... in Real True 4D.
