1080 refers to the lines of resolution. Lines of resolution and processing these lines of resolution can be a little confusing, so we will keep it simple. A 1080p TV has more TRUE lines of resolution than a 1080i TV which makes for a finer, more detailed image. Obviously, a 1080p TV has more lines of resolution than a 720p TV.
When you are deciding if you should buy a 1080p TV, the first thing you need to know is how big your TV will be. At less than 45″ the human eye won’t see the difference between 1080p, 1080i or 720p, so don’t waste money on a 1080p TV unless it has another feature you want such as streaming Netflix. Now days, 1080p has become the standard so getting a nice TV without 1080p would be like buying a nice car without air conditioning.
Is there really a big difference between 1080p and 1080i? YES! You won’t believe how good your Blu-ray movies will look on a 1080p TV. The picture is so clear, you’ll feel like you’re looking through a window. Unfortunately, cable TV and satellite don’t have 1080p content, but I’m sure it’s coming soon.