I have played all three, and currently own both an Iron Cobra Flexiglide and a Trick Pro 1-V. I prefer the Trick. It's faster and smoother than anything I've played. Plus, I love the design and easy adjustability. Additionally, although I have the model with a heelplate, the pedal can be retrofitted for a longboard, and can also be converted to a double pedal. Finally, the Trick appears to be built for a lifetime.
So if a direct drive pedal is for you, and you have the mega-bucks that a Trick costs, I recommend the Pro 1-V