TTools or Project AI

Greetings,
This question has probably been posed many times before but I was wondering what the difference is between using TTools and Project AI to add AI planes. My guess is that the former is a manual method, while PAI is an auto-install. If so, is there an advantage of one over the other? The PAI site doesn't have what I consider a comprehensive tutorial on how to download their packages. I don't want to download AI packages and somehow mess something up. Is there a good tutorial on using their site? Thanks!
This question has probably been posed many times before but I was wondering what the difference is between using TTools and Project AI to add AI planes. My guess is that the former is a manual method, while PAI is an auto-install. If so, is there an advantage of one over the other? The PAI site doesn't have what I consider a comprehensive tutorial on how to download their packages. I don't want to download AI packages and somehow mess something up. Is there a good tutorial on using their site? Thanks!