When I did a seating clinic at Kessler, they quickly decided I needed a custom Jay Deep Comfort cushion with a 10% overfill and an extra inch of length.
When I got that, I returned on my Roho 4" Quad.
When we mapped the two, it was night and day! The Roho was so much better! No red pressure points at all while the custom hot rodded Jay had a bunch.