This is my first ever pair of studio headphones I ever bought and I'm so glad I chose this over the Sennheiser HD 650.
The build quality is absolutely fantastic with its wood and metal construction. It's also very comfortable allowing me to work for long hours with very little fatigue.
However, the sound is pretty weird and different from what I experienced. I'm used to the sound of my old Apple EarPods so going from that to the X1s was very strange. But I think I'll get used to it over time.
Overall, this is a great pair of headphones!