I've started using Q10 to write again. It works very well for short stories, since you don't have a ton of text to scroll through and the story tends to end before it clogs up the program's memory. But, its appropriateness for such writing notwithstanding, my favourite feature of Q10 remains its visual customizability.
What is it about lime green, cyan, and magenta text that so allures me? I suspect it is that these outlandish colours most put me in the mood for writing speculative fiction. Green is great for biopunk; azure for space opera; gold for epic fantasy; and blood red when writing horror. All of these, of course, go against a black backdrop, on account of the fact that black goes with everything.
It may be only a small thing, but the ability to create your visual workspace while you write is incredibly refreshing for me. Q10 retains full points for its ability to constantly revivify my writing with the parameters of the very program within which I am doing my writing - and, of course, for doing so within a fullscreen setup.
There's also those great typewriter sound effects...