You are in need of professional help, and that begins with a room evaluation, and best to do that before you spend a dime. The room, and its treatment, is everything, for it that which you will 'hear'. So find a person, professional acoustician, who can help with that first. Otherwise, you will fall to dealer, much like a used car salesperson, selling you whats on the 'lot'. While you are waiting, check out Toole's book on Sound Reproduction, a classic/bible on better listening. Hopefully an Amazon Drone can put it on your door step in the next half hour.