Well, it depends. If I had to choose then I'd say computer paper, because I probably draw more than I write and I hate to draw on paper that has lines on it. XD On the other hand, when I am writing a letter I have to use paper with lines because I couldn't write straight without them if my life depended on it! I know that no one can really write perfectly straight, but when I try to... ugh, you don't wanna see what it looks like!