Can't speak to the Hyper Cell as I am not lucky enogh to have picked one up yet. But, I agree that the Defiant Soul is a great in the oil and it is very strong to snappy off the dry for me.
I have been playing around with surfaces ranging from 1500 polished, 4,000 and 2,000 to increase it's predictability on the back end. I love the balls strength but I will also say it is very condition specific.
MK