720p. That is what your native resolution is on your tv.
Plus I would personally pick 720p over 1080i any day.
Roamio Pro, wired ethernet
Mini using MOCA (from the Pro)
on Cablevision Raritan Valley system (Central NJ)
w/ Cisco PKM803 CableCARD on firmware 126.96.36.1991
*** 2013 newbie to Tivo ***