We have had the pleasure of looking at a review model of the Optoma UHD51/51A which is a mid range 4K Projector. It retails at around £1500 or $1600 and I believe is the best value 4K Projector out there as it is packed full of stunning features.
4K projectors are only now becoming more affordable with entry level models starting at around £1000 or $1000. This model is the mid range but packs so much more than the lower priced 4k Projectors. It really is worth considering missing them and spending a bit more and getting something that you may feel will last you longer and have extra features.
4K Ultra High Definition and HDR 10
Amazing colour - accurate 100% Rec.709 colours
2400 ANSI lumens
Vertical Lens Shift
PureMotion Technology for smoother images
There is great connectivity as this hosts two compatible 4K HDMI 2.2 inputs as well as a hot of other connections.
With the Optoma UHD51A you will be easily able to connect to Alexa and control your projector from your Amazon device. Exclusive to the 51A model is also a build in media centre.