I've heard great things about the X1. Seen some good user reviews also. Hopefully, someone on TH actually has it and can share some experiences here.
@offtopic: However, for that money, you could also go for a Dell.
The XPS series has become a great value with the recent price drop. Think about it. You get an 8gen intel proc, 8GB ram, 256GB m2 and a 1050 for that money. If you add a couple hundred bucks you get a 1050ti and a proc upgrade.
It's a whole other brand, I know. I'm just putting it out there as a suggestion with a sharp pricing of the XPS nowadays.