http://www.techradar.com/news/television/tv/10-best-50-inch-tvs-in-the-world-today-902184

For most folks, 65-inch screens are simply too much for their living rooms, and anything less than 50 leaves them wanting a bit more. 

But that's why there are 55-inch TVs. These screens are the perfect balance between size, performance and price, allowing you to get maximum clarity without spending a fortune on that new flatscreen.