I only realized a few months ago 80HD is ADHD. I have the Krooked 80a Zip-Zinger wheels, I wonder if they’re the same formula?
They are both 80 duro, so could be. The Krooked board I had a roll on felt a little different, but that could be more the shape of the wheels than anything else.
The older Spitfire 80 duro wheels seemed to mush out a whole lot if you carved hard and I had seen more than one wheel in pieces, the outer tearing away from the inner core, so I think that is why they re did them, making them better now.
They were still a good softer wheel for normal skating or just getting from A to B on a regular board you can pop up a curb as needed, especially in the wider shaped 80 duro wheels. I had Classics, Conical Full, Classic Full and some other ones from 54 to 58 mm size.