Well, I don't know why so many make such a fuss over masking. I say just get the screen that best fits your room (GO BIG! lol). I went with a 130" 2.35:1 screen because I have 3 towers across the front. Having a screen/TV up in the air like this has never bothered me. Been doing it for over 20 years, never had a sore neck.
Epson 5040ub → 125" 2.35:1 Silver Ticket (white)
Pioneer Elite SC-99, Pioneer Elite A-20, Pioneer Elite SP-EFS73 (L,R,C) / SP-EBS73 (S & RS) / SW-E10 (4)
Sony UBP-X800, Tablo TUNER, nVidia Shield Pro