I'm retired, previously working in Aerospace Manufactring and Design. In 2018, my first 3D Printer was a Bibo Touch, dual extruder, a clone of UltiMaker. Added Longer LK5 Pro, 300x300x400, then after power supply failed, got the Creality CR10v2-CR touch probe. Dec 2025 purchased Creality K2 to check I still had interest in printing after time off. BL was my preference, but K2 was enough spend to inform me. At over 600h fault free it's served that purpose as well as confirming my opinion on the waste from multicolour printing. Meanwhile a solution is available; H2C, is an imminent purchase.