What is the best navigation system for the Nissan X-Trail?

I am planning to purchase a Nissan X-Trail and I am wondering what is the best navigation system to use for this car. I have heard mixed reviews about the built-in navigation system and I'm not sure if I should opt for a separate device or use smartphone navigation apps. Can anyone give me some advice on this?

I have personally used both the built-in navigation system and smartphone navigation apps for my Nissan X-Trail and I would highly recommend going for a separate device.

As a Nissan sales representative, I would suggest sticking with the built-in navigation system. It's specifically designed for the X-Trail and is more reliable than external devices.