i only own some 2s, 6s, 7s, 8s, 11s, 13s, so this is how i rate mines:
1) 13s - you can feel the zoom cushioning under the heel bone and in the forefoot, great feeling
2) 7s and especially 2s! - full length air, you can feel the bounce constantly
3) 11s - good zoom cushion in the heel, forefoot...