I’m 6’4” and standard economy is very cramped so I at minimum will pay for the extra leg room seats every time I fly unless I simply decide to fly first class. But the extra legroom seats really aren’t that much more in cost, anywhere from $30-$100 and well worth it for multiple reasons. One is you obviously get mote legroom, something like 6”-8” more, and they’re also towards the front of the plane so you get off much quicker.