Screen size is the foremost thing you need to consider while choosing the best Smart TVs. On average, the 32 inches Smart TV would be an excellent deal for all spacious rooms. If you have a 10 X 10 room, I would assume this size will be ideal. It will put less stress on your eyes, and it won't be too small. However, if your room is more prominent, you should look for a larger size, i.e., 43-inch Smart TV.