I'm investigating getting an 8K set for flight sims but I am confused by the different suffixes. What is the difference between the 55Q900RB vs. the 65Q800TA, other than size? I'm presuming the 65Q900RB will be the same as the 55Q900RB, other than size? In reading ALL of the posts in this thread, I found one post that says the RB suffix means no HDMI 2.1. Also one post that says an R suffix is a 2019 model and a T suffix is a 2020 model. So, are the TA and TS suffixes 2020 models with the HDMI 2.1 and an RB a 2019 model without?