I'm not sure but there is a rumor floating around saying AIO has changed.. I used the old one so I will tell you i was VERY impressed with it.. and I'm also a BIG BIG fan of propolish. Now if you need to do some correcting .. then Propolish is the way to go... if your just cleaning the paint for sealent.. then AIO is the way to go..
If i had to choose one..
Propolish would be it.