We received an Oculus Rift development unit a few days ago. I have used the DK2 version prior and was not too impressed with it, as it was not too comfortable and caused red circles around my forehead, where the padding was pressing against my face. This new version has a redesigned strap and harness. I hope that it would be more comfortable to wear over extended periods of time. I will make an edit as soon as I am able to experience this device in the comfort of my own home.