I purchased a refurbished X1E in January and it had the worst backlight bleed I'd ever had in a display. Lenovo's "Depot" service was super quick, with overnight shipping each way, and the display was replaced and back in my possession in 3 business days, which includes me shipping the laptop to them. Of course, depending on the repair and if parts need to be ordered, this process could take longer, but I was impressed by how quick and efficient everything was.
Unfortunately, the new display still had some backlight bleed, and I know the repair people noticed it because my desktop background was changed from solid black (which I set so they would see the issue right away) to another color. Still, it was acceptable and minor enough that I could sell it to a new happy owner.
But to get back to the original topic of this thread..after recently trying the HP Spectre x360 and the X1E, I did feel comfortable buying a new MacBook Pro a few weeks ago, and for my needs it's the most well-rounded and best performer of the bunch.