"All-in-one" does not necessarily include a touch screen. The Acer models you mentioned seem to have no touch screen, but there are many and very interesting touch screen solutions, which of course need to be connected to a computer. I don't have any FireWire mixer anymore, but my Mac mini would still be ready for recording, mixing and mastering (Capture, Studio One Pro). At the moment I am using a standard Lenovo laptop (i5, 2.6 GHz, 8 GB RAM, Win 10 64 bit) and USB and its just fine. And it's much easier to utilize than a computer plus a screen plus a keyboard plus a mouse...