I used the Question piece to start experimenting with brushes. I downloaded some from the internet, and I'm not sure how well they worked. The inking was good, but they seemed to slow down my computer. I'm not completely sure that the two things are related, though I did see some things about that on the internet. I'll go back to the standard brushes and see what happens.
I really dug the Question, especially the Eighties series. And DC is missing a bet by not turning him into a TV show. Great visual, easy concept, and it would work great.