I recently purchased at 9400 and think it's amazing for the money. I had previously owned an x9900 and worked out that my personal preference was for a brighter image vs inky dark blacks, so the Epson is more suited to my needs. Once set up, I actually don't find the blacks to be too bad with this pj. The only niggle I have is that it operates a bit louder than the x9900 did, especially in high lamp, but to be honest I haven't found a situation where high lamp has been needed! Some of the settings really blow out the colours and have a lean towards green, but I assume that's due to the high lumen output in those settings. I have found that Natural for SDR and Bright Cinema for HDR is my go to. HDR is fantastic and I've really enjoyed the pop that this pj offers. The JVC handled motion better, but the Epson still handles it fairly well. I have not calibrated it yet, and have not really dialled it in, so when I get a chance I will play around but so far so good. I also like the fact that the replacement lamps are almost a quarter of the price of the JVC's which is good because I am sure my kids will want to game on it a lot!
I think Epson has done a stellar job with this unit, especially considering the price point.