@ quarkx:
I have WinUAE (or rather Amiga Forever) running on a fast PC and it doesn't "feel" the same as the Minimig. The Minimig has that Amiga touch and there's no farting around with digital joystick settings or the like. You plug it in and boot: It's a real Amiga and when you compare it with an A500 with a scan doubler (and now a turbo card and extra RAM) then it is a cost-effective replacement with the added ability to use ADF files instead of corrupted floppy disks.
The C-One is a different kettle of fish. Yes, it costs a lot more, but it has the potential to offer a lot more. I didn'y buy it just for the Amiga side because I already own a Minimig. What I want is a single machine that can replace my C64 and Amiga for most uses and have the ability to connect to my existing hardware (there are C64 serial ports, cartridge slots, Amiga clock ports, IDE headers, floppy headers and a PCI slot). Don't bother mentioning emulation again, because I've done that on the PC and you don't get the feeling that you're using the actual hardware plus you have to jump through hoops to use the peripherals.
Your A4000/A1200 in a modern design is very possible, but it will probably be based on a Clone-A motherboard looking very similar to the C-One in size. I'm sure The Daddy will build a case for it. :-)