I hate to jinx it but the HP-1 is pretty much exactly like the HP-2. Maybe your amps or your brain or whatever will be more ready for it. I would have thought the Dragon would have been a good match for HP1000 cans, but who knows. The PS-1 is totally and completely different, so you will have to try them out sometime. I would be happy to send mine to you for an audition if you are interested at some point.
Sincerely not trying to influence you, so enjoy the Joe Grados and see what you think. I like them and think they are cool, and depending on your amp it can be a great pair of cans.