55” U8K and U8N?

Sorry for so many posts. This is my first TV in over 12 years, and is my first ever Hisense. It seems the U8K and U8N at the 55” level are the same. Correct me if I’m wrong. I have done a lot of research, but that seems to be constricted to the 65+ inches range. They leave out the 55”. So that got me thinking. Is there any advantage over the U8K to the U8N? These models are so confusing too. U7N, U8K, then U8N. Last time I got a TV, I wanted mid range. I got midrange. I’m just trying to get my head around this. Thank you.