I'm very happy with my XPS 13, great build quality, great battery life, new hardware, tiny screen borders(resulting in a tiny laptop) and linux support.
I'm also using Dell Thunderbold Dock TB15 and it drops video output and USB connections after 3h (because of heat) [1].
Of course I've got everything updated.
I had an excellent experience with XPS 12 years ago but this 9350 is constantly driving me crazy. I would certainly not recommend it.
[0]: http://en.community.dell.com/support-forums/laptop/f/3518/p/...
[1]: http://en.community.dell.com/support-forums/laptop/f/3518/p/...
Also, the display is too reflective. It was a mistake to go with 3200 resolution.