This is by far and away my favourite disc in the prodiscus lineup. It has torque resistance and glide along with an overstable finish, meaning you can rip a forehand with this for a nice controlled flat to fade shot with confidence. I'd label it as a slightly slower PD/raptor, thought it still goes plenty far. It's very workable for a range of shots, with enough overstability to get gentle flex shots out of it.
Ultrium gives this disc a really solid firm feel in the hand to put energy into with the flick.