The OnePlus One is a great phone, and probably the best bang for your buck if you want to go off-contract. The biggest problem with it up until now was that you needed an invitation to buy one. But OnePlus is making its so-called "flagship killer" phones available today without an invite (until they run out).
If you're curious about the beautiful, affordable $300 off-contract smartphone, now is a good time to snap one up. If you buy soon, they'll deliver before Christmas.