I'm almost exclusively ITX now. Onboard sound is pretty good these days (at least for my broken ears), I only use 1 graphics card and I have no need to move beyond 1Gb networking. Even some of the Z370 and X470 ITX boards have chunky VRMs for overclocking. For me there's no need to go bigger, unless I'm planning a show piece which I could never afford to build.
I've got an mATX at the moment, and with a massive graphics card (used to have a palit GTX1070), some of the SATA ports were inaccessible without the card removed.
Why are itx motherboards generally more expensive than Matx?
Is it just me, or is it simply nicer to have a big old motherboard sitting in there, ready for anything?
mITX tends to be a bit restricted when it comes to memory slots and I/O ports compared to ATX & mATX. But if you don’t need so many, then there are some good quality boards. mATX does also have the option of running SLI/Crossfire, but that is not so sought after now and might explain why the choice of mATX boards has reduced.I used to think, what is the point of mATX when you have mITX.