Installed ClassicShell as StartIsBack is still in beta. Computer boots to the desktop, bypassing Metro. Start button is back. I even put the classic Win7 wallpaper back on.
So I basically have Windows 7 again, but with:
1. Faster boot and application times.
2. Native ISO and VHD support
3. Native USB3 support
4. Access to Windows apps (if I ever desire to use them)
5. Sandboxed instances of IE10
6. Much improved Task Manager
7. True copy/paste and cut/paste times
8. Taskbars on all 3 of my monitors, different wallpapers on different monitors
Apparently security is even better, as the Win8 code makes it much more difficult to access the NT kernel for exploits.
I guess this seems more like Windows 7 SP2 to me, rather than Windows 8.