[NotSammyHagar]

I have one. It's pretty. But it provides no useful thing other than occasional touch screen use. But it has terrible battery life. 5 hours is good.

Supposedly the fhd (1080p approx) has much better battery life. I regret getting the 4k screen. For OP above, what's your battery life like? Mine is so bad I keep thinking something must be broken. I'm not doing compiling all day either, doing small things in bash, not killing the cpu, web pages.

[cge]

That depends on use. For working on or reading papers, it's great: I've significantly cut down on the number of drafts and papers I print, as the screen's ppi is high enough that figures will appear at a similar resolution to what most researchers will have on their printers when adjusted to the correct size on the screen.

[PascLeRasc]

I used to own the XPS 9550 (15", 1080p non-touch) and the battery life was around 6-7 hours with the Nvidia GPU disabled. I bought it used so it might have been even better new too.