Rantings, I know you asked for one but I think there are 3 that are so underrated they all have to be named.
I agree with you----the Crunch
The Thrash
The Super Freak
Notice one thing about the 3 of them? They were all released near the end of last season (a bad release time in my opinion). With these 3 balls you can almost have an entire arsenal minus a dry lane and plastic.