As we have now moved onto uArch, I'll second the notion that, ignoring commercial factors, 680x0 series chips were awesome, and ahead of their time.
I have a friend with a very souped up Atari. IIRC, it's running an 030 at ~100Mhz (I'll ask again, he's probably added more since). What it can do (And the efficiency of the programming) is simply stunning for what is essentially rather old kit. He was saying (Again IIRC) that people are knocking out 060 "clones" of the Atari. Plenty of RAM (~1GB), decent Graphics (Radeon 7000 series), and the storage tacked onto these systems (They sure as hell don't need it due to the aforementioned great programming) is immense, SCSI is preferred, though I do seem to remember someone had hacked IDE onto something somewhere. Full Multitasking OS too, but bollocks if I can remember the name of it, and I'm too damn lazy to google it at the moment.
I was tempted to do an MS Windows, and denounce anything other than my Beloved Zilog Z80. x86, or 64bit? Who needs all those fancy features, my Spectrum +3 has a Floppy drive, and can play games as well as doing my home accounts, it even says all of this, right there on the box!