I was also considering the Insane or RF, but went with the Rocketflex. My DD swings it the same as her 4B, but likes the way the 4B feels and sounds a little better even though the results seem even. Rocketflex is a great choice.
DD started with the CF5 Insane. I bought her a RF for the colder weather in Fall and early Spring. After she used it in Fall tourneys, the Insane stayed in the bag from then on.
Insane doesn't feel endloaded to my DD. I had bought that red cf5 when it first came out NIW and what a waste. Complained to light and no power even though it hit lazers through the infield, but no Bombs. After One tournament, it was sold. But that's just her style of swing. If your DD likes a softer barrel with flex in the handle get the insane. The the RF is a great bat with a good sweet spot.
Sweet spot is smaller...daughter used worth 454 end loaded for a year and switched to a balanced cf5. She liked it much better! Complained the end loaded felt heavy.