I have both an Oscar Vortex & the push-pull. Both work great. I was kind of shocked when I installed the Vortex, it seemed less responsive than the push-pull, but after I adjusted the analog settings, works really great.
The Vortex was much easier to install & takes up less room than the push-pull, and works great. I'll miss my Push-Pull spinner though (I removed it from my main panel to work in my discs-of-tron panel I'm working on. The spin on the push-pull isn't that long, but it has a very authentic feel, and excellent game play.
I've felt the SlikStik tornado, which feels great, but the long spin time is a negative in my book, as it's a little too easy to spin. The slikstik feels good, but I rarely need to let the spinner go in tempest, and come back 2 minutes later to pick up where I left off. A spin of a few seconds is all you need to feel like a spinner is responsive. The slikstik is a bit much. I wish they would have produced a more "average" spinner, I might have bought one. The current expensive tornado model just isn't for me, though.