It all depends on what you prefer. Each type of cloth diaper has their pros and cons.
The classic prefold with plastic pants is my preferred choice. No, its not something I grew up with, and doesn't have a biased reason, but I've actually tried AIOs, AI2s, and so on. The reason I prefer prefolds is because they are the easiest to clean and sanitize for the prevention of lingering odors. The waterproof lining (plastic pants) are cheaper than replacing an entire AIO diaper. Prefolds also have some protection on the wings and sides unlike the others that generally have the padding in the center. You can also customize the diaper to fit you the best, customize the thickness, and customize which plastic pant you want to wear over it. Pins aren't necessary for prefolds anymore, and eases one of the cons of prefolds, which would be the ease of application.