I just purchased 2 of the 6Ks and I am keeping both. AMA.
I do not understand the complaints about pixel density. The display is 223 ppi, which is the same or slightly higher than Apple displays. I am using them in a dual display configuration with an M1 Macbook Pro via TB4 and a Windows PC with an RTX 4090 via DisplayPort. The KVM feature makes switching back and forth a breeze. I am using 175% scaling (in Windows) and I don't think 8K with 1:2 scaling would give suitably sized OS components for me, so it would be fractional scaling either way.
The startup time doesn't matter in practice because they still wake up from sleep instantaneously.
The mini-DP IN port would be inconvenient but Club3D makes a bi-directional adapter that makes it regular DisplayPort for about $20.
I am fine with the camera defaulting to ON for Windows Hello to work in my 2 computer setup.
My only serious complaint is the piss poor speakers and the fabric covering them.
I would also prefer a glossy display, but in practice I just don't find it makes any difference. I arrange my office for no reflections anyhow, which results in an equivalent experience. Additionally, the Dell 6K has excellent blacks. It has much better blacks than any IPS panel I have used.
Can you elaborate on the kvm/switching feature? My current monitor is awful for that, I really just want a dedicated "cycle input" button. Or ideally, an N-position slider switch, but I can't imagine anyone would ever build such a thing.
The built-in kvm feature is very basic and I don't even setup the keyboard shortcuts because that requires software to be installed on the computers. Basically it just lets me switch between computers with 2 quick button presses on each monitor. I use an additional usb 3.0 switch from CableMatters so my peripherals can be switched between each display incase I want to have both computers up side by side.
If you only need 4K, there is this extremely badass TESmart KVM switch that I have used before and would highly recommend. It also has a cycle mode. It's $700 but the thing supports 3 4K monitors and 4 computers and works exactly as described. https://www.tesmart.com/products/4-port-triple-monitor-hdmi-...
Extremely badass but still 60Hz :(
I wonder if I’ll ever find a way to drive 4k@144Hz and switch inputs without the current cable replugging ritual.
There's software to help do this automatically (https://github.com/haimgel/display-switch)