There are some pretty big down sides to the Hue Sync Box. It's not gonna have the same effect where you have tons of LEDs that all change color to sync with the screen. Instead, you may have a few different lights that are limited to 1 color each. Unless you have just use a single Hue lightstrip that is limited to 1 color only, you're gonna spend hundreds more for a few lights. Unless you have the Hue lights already, the $230 Hue box will be the cheap part. I know Dreamscreen doesn't support Dolby Vision either, but the Hue box doesn't even support HDR10+. I would hope that could be added with a firmware update though.
I'll be sticking with my Dreamscreen for the time being at least. If the Hue box gets updated for HDR10+/Dolby Vision and has more customization, I'll make the switch since I have a bunch of Hue lights already.
Sorry for my English but Few years ago I put hue lightstrips in my tv : ok if you want some green to watch European football or red to see the voice ... that’s all. It was impossible to see movies This is not ambilight it s just one color. Now I have the DreamScreen and the hue lightstrip is in my kiitchen And I have side kicks near my TV