I watch them on both - Blu-rays on the big screen, and streaming on one of my 27" monitors or on the 52" TV in the living room. For both the projection screen and the monitor I sit at a 1:1 viewing ratio (screen width to distance), but for the TV in the living room I'm usually sitting at the far side of my kitchen table, on the other side of a 3' high dividing wall/peninsula, so there I'm about 15 feet from the screen. That would be the only instance where the smaller subtitles may be a bit of an issue.