Darryl has upgraded his home theater and wants to know what 4K streaming device to get: FireStick, Roku, or even AppleTV? Leo says you want to be sure that your streaming device is HDR compatible, that's more important than 4K. The advantage to going with the AppleTV is that Apple will upgrade all your purchased content to 4K for free. That's a huge benefit. What Leo doesn't like about the FireTV is that Amazon relentlessly advertises to buy stuff. The other option is ROKU. Leo's favorite streaming device is ROKU. It supports 4K HDR with Dolby Vision.
John is looking at his 43" screen and thinking it's way too small. How large should he get for his next one? Leo says that 43" is way too small to get an immersive experience. Sitting at 8-10 feet away, he'll want to get the largest screen that he can afford. He should check out the RTings size calculator here. There's also the "spousal acceptance factor" to keep that in mind. John should at least have a 55-60" screen.