well saidI'm not an RLX owner but I can give some insight.
If you are constantly comparing the RLX to the BMW or Audi or Mercedes equivalent you probably should just buy one of those three because you will be happier
If you are an Acura buyer and own a previous RLX or maybe the TL and would like to upgrade and stay within Acura. The RLX might be your car. You might just be happy with it.