I used to have a couple Speed Kings thinking that Neil Peart couldn't be wrong. But then it occurred to me that NP could be wrong, and I don't use them anymore (either does he!).
They do have their own feel. I've played enough other pedals by now that I like much better. It may have been a superior design at the time, but not anymore, IMO. There are other "longboard" pedals out there you should try.