IMO XT32 processing with SubEQ is the feature worth having. My recommendation is to spring for the X4000.
I agree with ReUpRo. Here's what's gonna happen...
> You get the X4000. (It has all the features, including 4K upscaling so it will still work when you get a 4K TV 10 years from now, and great performance.)
> You get the best speakers you can afford.
> You get the best subwoofer you can afford.
> You get some more speakers when you can afford them.
> You get a better sub when you can afford it.
> You get some more speakers when you can afford them.
> You get a better sub when you can afford it.
> Wash, Rinse, Repeat... Perhaps you throw in an external amp somewhere along the line, but all the while your X4000 stays, does everything you want, and does it very well.