Hi Des , at current moment for laser base HT type 4k /UHD the JVC z3 is the most in expensive to get . Only thing is not using full glass lens , basically if it is max out zoom you will see some blurry edges . If it is install within tolerance it will minimize .
These projector is very bright and compact which is great for HDB rooms , it does have H/V lens shift but not as good compare to the JVC N 5/7/9 lens ability .
Having brighter projector means we have better option on the type of ambient light condition to watch in , trade off need to get a grey screen material to obtain better contrast in the new type of environment .
It like back than with projector brighter but cannot do very good black levels , compliment is to use the grey material .
My observation …