I found a great blog post defining the different cloth diaper styles with pros and cons of each. It can be found here.
My 2 cents: What works for some people may not work for you. All babies and Mamas are different. I started out liking the AI2 concept but soon realized that I was too cheap to use the disposable inserts, so AI2's weren't necessary. It turns out I like the ease of pockets as they are great for overnights and when out and about. Recently I won an embellished prefold from Sweetpeaboutique and was fortunate to have a few covers to use it with. It is in a super cute Ooga Booga print and has turned me onto the fun of prefolds for use when at home.