ABC, ESPN and FOX broadcast in 720p, not 1080p. There is no bandwidth difference between 720p @ 60 Hz and 1080i @ 30 Hz.The only 1080p on either is strictly with PPV...if your TV is compliant. All the cable/broadcast channels are 1080i, with the exception of ABC/ESPN, FOX and maybe a couple of others. So I guess the answer to your question is really both, or neither.