1080 is definitely better and what is characterised as 'Full HD' where as 720 is “HD Ready”. TVs or monitors listed as Full HD can display the 1080 lines ... 720p has an image resolution of 1280 pixels by 720 lines. ... By comparison, a 720p TV has twice the resolution of an analog TV picture. 1080i has a resolution of 1920 pixels by 1080 horizontal lines.. Wondering what all of the different HD..