I use lots of desktop environments, having lots of computers with more on the way.
On my IBM ThinkPad R40e, I use Windows XP modified to look like a very dark version of Windows 7. Very clean desktop because I use it only for internet, calculator emulation, and TIConnect. And creepy music.
My Gateway 400VTX has the standard Windows Vista Classic environment, being used for exactly the same thing as my IBM except in places where there aren't any LAN ports. It also has Microsoft Office. Soon, the Ubuntu it also boots from will dominate, becase three months after I installed Windows from a genuine disk with the Windows logo and everything, the disk drive broke and in the corner of the desktop, it says, "Not a genuine copy of Windows."
So the Ubuntu will be Unity2D with different colors.
My Toshiba Satellite C55 has Windows 8.1 with everything changed to jet black. It has the original Windows wallpaper for everything since XP, but done in dark colors.
My Dell Optiplex 755 has Windows Vista OEM with a manga angel for wallpaper.
But my other three computers are best of all: they have BIOS.
Can you believe how many junky computers I have? And I get another tomorrow, which I can keep if I fix. I can't believe the guy who owns it calls it old because it is from 2007! I have another laptop with Windows 95 and no way to connect to the Internet except through the built-in phone line![/img]
And I still can't find an OS that runs smoothly on a laptop with 512mb ram or 256 on my other one. To top it all off, my disk drives are broke so I have to install it from Windows. I don't suppose any of you have any ideas?