Ok, so I have an XPS 13 that is literally the best laptop ever on my eyes. It's crisp, it's beautiful. It has the 1080p "FHD" InfinityEdge display. And as long as I don't let it use too new an Intel driver or update Windows past LTSB 2015, it is simply gorgeous. I think it's the XPS 9343 model from 2015.
So (a year ago already) I ordered an XPS 15 9550, higher specced but ostensibly same/similar screen.
It was nowhere near as comfortable. My boss ordered the same one, and his was better. But his, at the time, was reimaged with LTSB 2015 (what was supported at work at the time) and mine was left running whatever shipped from Dell (which was updated to Anniversary AFAIK).
I've been ignoring it for a while, but I need to reformat it with LTSB 2015 and see if it simply was bad because of Anniversary edition or not... because other people on here seem to be ok with this machine.
The other thing I'm trying at this point is a newer Dell XPS 13 ... and retrofitting the nice screen to it. After I've determined that the laptop itself is good by using the usb-C dock to a known-good monitor, I found a very good teardown video and it seems pretty straightforward to swap the screens (the nicer one came with a 4k touchscreen).
The key factor here is that these machines HAVE to run Windows 10 - people have tried to get the 9550 working on Windows 7 with very limited success - so it'll have to be LTSB 2015 until Microsoft unfucks whatever they fucked up in Anniversary and newer versions.
I'll let everyone know how it goes.