6 old As.
Phoenix wheels are an all around great wheel. They have the best feel of ANY wheel on the market right now, hands down. A smooth and exceptionally fast ride. They have the softness of grippers, but the speed of Eagles. Which is a great combo.
Compared to my sliders they're same speed, but a bit softer, the sliders are like bricks compared to the phoenix wheels. I remember a lot of people liking eagle sewer caps, they should consider sliders to be the best wheel if they like hardness.
I have to say phoenix hit the nail on the head though. 85A is the same hardness of the best plastic core wheel out there: Am wing.