If blackest black contrasts are your thing, the JVC is still the one for projectors. The Epson Laser is also a great contender, almost but not quite the black level contrast of the JVC.
Sonys have never cared as much about absolute black levels as overall picture quality. I tend to agree with that, but my Sony VPL VW1100ES is quite good in regard to blacks, and I guess the newer generations, even the least expensive 300 series, are better in blacks and contrast.
Sony has the best 4K scalers, triluminous display, and true 4K, but with most materials and 1080P, apparently the difference isn't that apparent between the pseudo 4k and the real 4k Sony.
I have always liked the Sony picture quality, have found them to be the most "cinematic" for my taste, and I am not a black level freak, so Sony still tends to be my choice, but when I was looking for the projector upgrade, I don't think anybody was disappointed with their choice between the Sonys, JVCs, or the Epson, though the high end JVC pseudo 4k were considered the best bang for the buck.
I don't think any of the choices would be a bad one that you would regret, but you should really ask around if somebody could demo the models you are interested in.