INSERTiON is an easy 9. Burning Heat is only hard the first time you play it because the timing is really weird.
As for HVAM and So Deep, I don't believe either one is a 10, for two very specific reasons: So Deep, while being extremely chaotic, is pretty reptitive and honestly doesn't take that much stamina to pass, whereas HVAM takes a lot of stamina, but isn't chaotic. If it was, then it would be a ten.