A higher pressure-altitude or a higher pressure? Can't imagine what's good about a higher pressure-altitude. Less creaking making you less worried the plane will explode?
Higher cabin pressure, but it is marketed in pressure-corresponding-to-altitude; Norwegian Airlines for example keeps their cabins at 6000ft, ie. equivalent atmospheric pressure to being at 6000ft. (Looks like "equivalent effective cabin altitude" or just "cabin altitude" is the more accurate term.) So yeah, I worded that backwards, higher pressure, lower altitude, is more comfortable for passengers (me) especially on longer flights.