The windows version of Kinetic 2 is reported to be $400, so the much more useful IMHO Rift for $300 is a deal and one I'd jump on. Bring it! The Rift is unique and IMHO, does it right.
Still wish it was faster refresh that it was but overall going to be sweet for the masses and I'll use it till my migraine triggers. (I have visual sensitivities and migraines at 60Hz after 30-40 minutes, special setups of 120Hz or more to prevent it. IF they did that, I'd do $300, even at their current lower resolution, without question, no problem.).