When we needed a replacement laser tube, I was recommended to Opus CNC by somebody else. Opus replaced our tube and had everything back up and running in no time. The engineer was punctual and polite and he was even able to answer some questions regarding my machine which is not something they themselves stock. I would definitely recommend Opus CNC. This is now the third laser company I have worked with, and they have easily been the most professional and helpful of the three.