IMO Panasonic UHD Blu-Ray players are the best on the market. The UB420 is probably your best bet as it has most of the features of the UB820 other than it doesn't do Dolby Vision, but Samsung TV's don't do DV anyways. The UB9000 is Panasonic's high end model, but I'm not sure it offers much over then 820 or 420 other than build quality (less plastic) and Dolby Vison on the 420.
7.4.4 Theater Room: JVC-RS500, Silver Ticket AT 2.35:1 142”, Onkyo RZ830, Anthem PVA-7, Panasonic UB420, Apple TV 4K, JBL Studio 530’s, 4 - 15" DIY Sealed Subs
3.1 Living Room: Samsung 64” F8500 Plasma, Anthem MRX 300, Dynaudio Audience 52’s, Dynaudio Audience 122C, NHT SubOne, Roku Express (2019)