It is pretty solid and easy to install. I would buy again.

It shuts the door well but I wish there was finer adjustment over the force, 1 setting turn goes from barely shutting the door to being dangerous for my small dog.. it was cheap and it does what it's supposed to so it gets four stars

Product is as advertised

Works as needed to automatically close the door.

So I guess Deltana is better than Cauldham, but it's kind of meaningless, as Chinese trademark law is a hot mess.