Your safest bet for now is a Homatics BR4K+ (or one of the sibling S905X4 devices). These can reliably display properly mastered Dolby Vision Profile 8.1 files.
The only files you don’t want to directly convert to Profile 8.1 are Profiles 7 FEL files where the FEL Expands Brightness. The only way to properly watch these movies is with a FEL-capable Blu-ray player or by manually generating DoVi/HDR10+ dynamic metadata in DaVinci Resolve Studio.