You know, I see the mini ITX like as a system with a lot of possibilities and opportunities.
And in my case, I am experimenting a bit, especially to check the limit of this case.
There are and I have a lot of itx cases made by user from this network, and others from the retail chain like the Streacom DA2.
But this is the first one that has opened to me to a lot of possibilities and options! Is so well designed and focused on optimisation that there are so many configuration you can have with 0 modification of the case. Even the Ghost is claustrophobic compared to this. The only other case I had that gave me almost the same feeling is the DAN. (Still missing the M1, but I don't think I will go for it after the T1).
Going back on the ITX system, for me is also have the possibility to have a powerful computer on the desk with a small impact in it.
I personally don't like much the vertical case, because they distract my eyes from the screen.
In the specific of my last configuration, you can see how much is still compact the entire system:
all the panel are on, apart the top one, the 40mm radiator pop out a bit, but it doesn't change the space on the desk. Yes, Now there is a pump reservoir outside, but it is placed vertically, with a footprint of 80x80mm, in an otherwise dead space on my desk.
What I got with this? A dead silent powerful system, a low delta between ambient temperature and the coolant (5 degrees average, with a 3950X and a Titan RTX in the loop that rise till 11 degrees under heavy load).
It's only a matter of what you really need and want to achieve!
BTW, the D5 is DEAD SILENT! And this case is completely open even with the side panel on, so the noise will be more or less the same.
Here you can see the DB measured from a distance of 30cm, of the system on medium load.
Because the fan and pump are set on the delta of the temps, they lamost stay below 50%!!
(BTW, I am under deadline at work, that's why I am still awake at 2:52 AM! ?)