So the Nike Air Skylon 3 (as they're called officially) really push the speed of my stride. As such, all my runs, even the ones that feel slow, are much more exahusting than before. The weight and easy fore-rear transition/roll almost forces you to take your foot off the ground the instant they hit, reducing the moments of rest I could get in between strides with the old clunky shoes. Still, 5.4 at 9:05 feeling "slow." Yes, I'm gloating =)