Just about any tournament shooter today, will not have an arrow that is not at least within .030, of being perfect. I know, few of us, including me, have a device to measure an arrow accurately. Spin testing is not quite good enough either. But I still do it. But here is a way to get arrows that are straight.
Some manufacturers guarantee their arrows to be that straight.
Easton XX78 aluminum arrows are among those. In the early days of carbon, they had some problems with straightness. Compounding that problem, you could not straighten carbon arrows. They were either straight or broken. That has changed.