Username or EmailPassword
I use these 3 distributions:
Linux Mint KDE (desktop)
Bodhi Linux (Older Laptop)
Debian Squeeze (Sun Blade 1500)
Any Debian / Ubuntu derivative that can use apt-get to install packages is great ... I am a big KDE fan and really don't like unity but appreciate what Ubuntu does for software center ...
If you consider all the factors, I think, Debian is the best distro:
 support a lot of processor architectures
 supports all the desktop environments
 supports a lot of packages Edited 2012-10-22 07:19 UTC
Absolutely. Debian "just works" and has a bigger selection of binary packages for non-x86 architectures than any other OS. Whether it's PowerPC, amd64, or ARM, it's the same Debian. That really fulfills the promise of Unixlikes to abstract away the hardware.