The PlayStation 3 and Xbox 360 versions are almost indistinguishable from one another. The 360 version has achievements, while the PS3 version lacks trophies; on the other hand, the larger shoulder buttons on the Dual Shock make it ever-so-slightly more comfortable for tweaking tricks. Ultimately, if you know more people playing one version or other online, that's the one you should choose.
Pure isn't the most original game out there, and it might have been nice to see it build on the trick system in SSX instead of just copying it wholesale. But nonetheless, its focus on tricks, boosting, and larger-than-life jumps over gorgeous environments pays off. This is an exciting racing game that seriously delivers on its promise of high-speed, high-adrenaline action.