I wouldn't recommend XPS. I have version 9350 and it constantly have one problem after another. In no particular order: slow boot time (it can take 7 seconds to see dell logo after pressing power button), coil whine, a firmware update killed the laptop once. I don't know how much of these problems can be attributed to Intel but I fear hardware manufacturers have adopted "release early fix later through firmware" mind-set. Good things about Dell: next business day warranty where a guy will come and replace the motherboard in case the update renders it useless.
I’d heard that some had fixed the problem by updating the intel graphics driver.
I did a Dell “update everything including the BIOS” and it made my QT development IDE and my application have bad rendering problems so I did a system restore.
The “pause” is a complete lock up, mouse and keyboard stop responding.