Dave, you seriously have asked the one million dollar question.
Without a doubt the big screen is the place to watch BIG movies, it gives you more of a movie theater experience. However, I am far more comfortable watching the news, old TV shows from the 1960s and 1970s, and Jeopardy on the smaller screen. And, honest gosh, 3D is very good on the big screen, but it is unbelievable on the OLED and far more comfortable.
But if you told me I had to have just one, I choose the bigger projection. But one day there may be a 110 inch OLED at a reasonable price!!!!!!!!!
One further note: The OLED comes with a tuner and we now have about ten over the air stations showing old TV shows. MeTV, Decades, Buzzer, Get TV, and much more. So it's easy to see them there. The projector is hooked up to cable and does not have an external tuner, but many cable stations run old shows.
Barry