and the fact that it has LED.
When i play games at night i hate the fact that i have to use my cell phones light or look closer.
Ill just wait for a good deal on that keyboard and get it for sure...my mouse has been good to me and ive had no problem with it so ill stick with taht.
Now that you mention it, it wasnt something i was looking for in a keyboard, but honestly, i never turn it off. And if i do turn it off, i find that i miss it.