Dave, The ones saying the LK970's blacks are like 20% APL on the JVC's in theory could very well be accurate with the JVC Auto Iris on and starting at the minimum locked iris position (-15), I have not tested but I could see this being a possibility.
But then you are NOT even remotely comparing Apples to Apples. As the max lumen output of the JVC will be ULTRA low compared to the LK970 and the 100% APL pattern on the JVC might be like the 20% APL on the 970....
: (This is my opinion) (assuming a 1.0 gain screen)
If your screen is 130" wide or less you SHOULDN'T buy the LK970 or the LK990.
But if you are over the 130" wide+ and as you keep getting larger the LK970 and LK990 become better and better. (I already have my JVC on High and Full Open Iris to get enough brightness.)
I will be testing on a 150" wide Seymour XD Screen, so the LK970 will be able to put up a tremendous fight.
*I will try
to test the BenQ LK970 vs the JVC NX7 in my real world situation of full open iris and High lamp vs the LK970 and see what APL on the JVC the BenQ's LK970's black level will be at. I don't think it will be anywhere near 20% APL though. (5-10% is my bet)* - I understand this will upset some here, but that is how I run the JVC in "MY" real world. The Dynamic Iris issues when already pushing the projector to the limits make using Auto a non-starter to me. (Yellowing and Major Clipping)
Honestly, I am not sure why people sit and fight all day over this stuff tbh.
If your brightness is perfectly fine with something like a JVC or Sony and you desire no additional brightness then don't even concern yourself with the likes of the LK970/LK990.
But you could at least still consider the HT9060. There are still benefits to DLP and LED light source over SXRD and DILA with UHP light source. You just have to give up ultimate black levels to get those additional benefits.