Morfiend- Your story about the TV swap reminds me of a maneuver a pilot friend of mine did with his wife. He told her he was considering buying a P-51 Mustang. She asked how expensive. He replied "about a million dollars" (this was many years ago). She said, "Ouch". Then he said, I'm also thinking of buying a Stearman Biplane instead. She enquired about the price and he said "$100,000.". She said, "Buy the Stearman", so he did.
Mr. RIPley- You have a good point about monitor vs. TV and monitor is typically the best choice when both are reasonably priced. At the moment, there aren't reasonably priced 4K monitors in the 50" size, and so it makes sense to take a close look at the TVs. Text looks better on a monitor than on a TV, for example, but I'm happy with what I have at the moment and wouldn't trade it in. That said, most gamers won't want to consider the 4K option until graphics cards with HDMI 2.0 ports are released.