I am quite happy with Fedora's XFCE spin on my desktop (inside a virtual machine). For now I can live with GNOME 3 on my laptop but as soon as I will have some spare time I will replace it there with XFCE as well, I think.

I switched to XFCE recently as well, and will definitely try out these scripts. I have a widescreen monitor as my second monitor so I'll need to figure out a way of doing "middle" as well since I usually have two windows side-by-side on there, but fullscreen on my laptop screen.

Thanks for sharing, this will be a huge help to me :)

@LornaJane: I think I'll be extending on it a little bit soon, as there are still a few things that I can't do (such as: go back to original size). Expect an update!

Thanks for the pointers. I greatly simplified my own implementation to do the bare minimum, and it's quite snappy. I made 5 separate scripts. You'll need to tweak the "magic constants" of 1920x1200, 24, and 2 to reflect your own resolution, vertical window manager chrome, and horizontal chrome, respectively.

move-up:

#!/bin/sh

wmctrl -r :ACTIVE: -e 0,-1,0,-1,-1

move-left:

#!/bin/sh

wmctrl -r :ACTIVE: -e 0,0,-1,-1,-1

move-down:

#!/bin/bash

winid=`xprop -root _NET_ACTIVE_WINDOW | sed 's/^.*# \(0x[^,]*\),.*$/\1/'`
height=$((24 + `xwininfo -stats -id $winid | sed -n 's/^  Height: \([0-9]\+\)$/\1/p'`))
wmctrl -r :ACTIVE: -e 0,-1,$((1200 - $height)),-1,-1

move-right:

#!/bin/bash

winid=`xprop -root _NET_ACTIVE_WINDOW | sed 's/^.*# \(0x[^,]*\),.*$/\1/'`
width=$((2 + `xwininfo -stats -id $winid | sed -n 's/^  Width: \([0-9]\+\)$/\1/p'`))
wmctrl -r :ACTIVE: -e 0,$((1920 - $width)),-1,-1,-1

move-middle:

#!/bin/bash

winid=`xprop -root _NET_ACTIVE_WINDOW | sed 's/^.*# \(0x[^,]*\),.*$/\1/'`
width=$((2 + `xwininfo -stats -id $winid | sed -n 's/^  Width: \([0-9]\+\)$/\1/p'`))
height=$((24 + `xwininfo -stats -id $winid | sed -n 's/^  Height: \([0-9]\+\)$/\1/p'`))
wmctrl -r :ACTIVE: -e 0,$((960 - $width / 2)),$((600 - $height / 2)),-1,-1

Hope that helps you out!

Thanks so much for the information Derick and Brandon. I finally can manage my windows from keyboard in a comfortable way.