Looking to get a new TV but the research has been seriously killing me. TL;DR companies are advertising their TV's at 120hz which is completely false. Using buzzwords like Motion rate. I am looking for a 50" - 65" TV for under $600 but I don't want to buy junk. Is 120hz really a big deal? If so is there even a TV with true 120hz in this budget? Ideally I would love a 55", 4k, HDR, 120z, Roku TV but I am just not sure if this exists.