You'll find a new OLED TV will be significantly better than your old plasma - the picture is brilliant on the new OLED TVs and the sound is pretty darn good too, even without a soundbar. FWIW, if you can stretch for a 65 inch, they're even better than the 55 inch. I know it will go against the grain in this thread but I bought a Samsung 65 inch OLED TV 2 years ago and it has not missed a beat. Prior to that i had a Samsung 55 inch 4K TV and that was great too. Gave it away to a friend of the wife to make space for the new one. Obviously, the OP has every reason to be disappointed with his TV conking out after 14 months. My experience with Samsung TVs has been very good so far - and my Mrs has it truend on all the hours that God sends!