You want a monitor that wraps around your field of view and makes games actually feel immersive, and you want it to last five years so you are not doing this again soon. The trick is knowing that display tech moves slowly enough that last year's flagship model is usually just as good as the brand-new one, minus the early-adopt tax.
Timing matters just as much as the model you pick. If you wait for the back-to-school push in late summer or the heavy discounting around late autumn, you can easily shave a couple hundred bucks off the sticker price.
That 0% intro APR window is a hard deadline, not free money, and if you still carry a balance when those 15 months end, the standard interest rate kicks in on whatever is left.