The Ghost Max 4 is the tall member of the Ghost family: a high pile of soft DNA LOFT v3 with a rocker shape that rolls you through the step, on a base broad enough to stay stable at 292 g. The drop sits at 6 mm, lower than the standard Ghost's 10.
It suits you if impact protection is the priority — big easy-day mileage, heavier runners, run-walkers, anyone coming back from a beating whose first requirement is that landings stop costing anything.
It is not a plated super-trainer and does not want to go fast; the rocker smooths the ride rather than propelling it. If the standard Ghost already feels like enough shoe, the Max is more of a thing you did not need more of.