I've wanted to like On for a long time but haven't been able to find a shoe they made that felt like a real running shoe. When I first saw the Cloud Monster I was hopeful, but after running in it, it just wasn't quite right. The newest Cloud Surfer was also a glimmer of hope, but still just wasn't quite right. After seeing the CloudEclipse I was really excited. It married what worked for me from the Monster and from the Surfer and created a great running shoe. The upper is still a little weird for me, and it bunches a little around the toe box, but that is my only complaint.
I have done easy miles as well as track intervals at sub-5 minute pace and they've felt fantastic! Great shoe, I'm excited with this new direction On is taking with their running shoes.