Advices about new Top Box

Hello everyone,
I’m looking for a top box for my new Samsung OLED S90C and I have some doubts that maybe you can help me to solve.
The main use will be for KODI (streaming from internet and much less locally) but I’d like to be able to use the streaming services too (NETFLIX and co.)
Initially I was headed towards the NVIDIA Shield, but as described in the main post, it starts to show its age and lacks HDR10+ support. The main selling point for me is the well renowed and mostly praised upscaler, which i suppose can be very useful with content below 4k.
The other candidate is the Fire Cube, but I cannot find much info about the upscaler with respect to the Shield one.
Finally, lately I found out that there are devices with Dolby VS10 engine, which from my understanding should be capable of converting Dolby Vision content in HDR10+, which can be immensely helpful since Samsung’s TV do not support Dolby Vision.
But also about the VS10 engine I couldn’t find much info nor testing or comparisons.
From your knowledge and experience, which can be the better choice for me?
Thank you very much