This lock is rather handy. When I am riding, it is attached to my e-bike's frame so it makes no backpack burden to me. Locking and releasing it in a well-known situations takes only ten seconds.
Though it is quite heavy, good feeling of safe prevails.
Why do I trust this Kryptonite product? Because LockPickingLawyer reviewed this model in his "[836] Kryptonite’s “New-U” Evolution Mini Bike Lock Picked" video. No joke, I trust this person's opinion.
Pricing is adequate from my view.
Design, materials and look are good.
But please remember, never use only one level of protection. Add some more security, for example, by installing a security alarm in an uncommon way.