A high-end virtual reality headset is a serious investment that should last you at least three to four years before you feel the need to upgrade. Buy the best version you can afford now so you don't find yourself shopping for a replacement in eighteen months.
Tech manufacturers usually drop new hardware in the fall, which is exactly when you should strike. Last year's model often becomes the better value during November sales because it hits a price floor while still offering top-tier performance for most users.
Remember that the 0% intro APR is a deadline, not a gift. If you still have a balance after the 15 months are up, the bank will start charging interest on whatever remains, which can get expensive fast.