What Do You Think About Integrated Servo Motors?

I’ve been looking into integrated servo motors for a small automation project and I’m curious about other users’ experiences. Having the motor, driver, encoder, and control electronics combined into one unit seems very convenient, especially when cabinet space is limited. It should also reduce wiring and make installation cleaner. However, I’m wondering about heat dissipation, maintenance, and troubleshooting if something goes wrong inside the integrated unit. For applications like CNC machines, robotic arms, and automated positioning systems, do you think integrated servo motors are worth the extra cost? I’d be interested to hear which brands or models you have used and how reliable they have been in real-world applications.