ate: It has been 1.5 years since the prefix was introduced. And only if your TV supports 4K resolution and strong HDR will you need to upgrade to the pro version. Not yet, at least. Even while you still can't compare it to a pro model because it's so much more powerful, the same nice TV upscales to 4K really effectively. Just myself, talking to myself and feeding only on the good feelings generated by this miracle. I truly hope that my input was helpful in making a decision.