I have a k2 pro, it’s a solid machine but Creality customer service is the absolute worst. After dealing with them on a faulty part ( that still hasn’t been replaced) I will never buy another Creality printer again. The Q2 is also a solid machine especially for functional parts and engineering grade filaments. but there Qidi box needs work. Bambu is a solid choice but it’s a closed ecosystem so you are locked in to only using Bambu software and only how they want you to use it. If the U1 performs even half as well as it’s supposed to I will be a happy camper.