Pixelmator seems to be the standout low-cost alternative to Adobe Photoshop. But as far as I can tell there does not seem to be a standout low-cost alternative to Adobe Illustrator. What do you think is best? Please vote in the poll and/or comment. However, please exclude Inkscape. It is clearly the best open-source/free option and is quite well known. But I want to know what else is worth spending some time looking into and in particular apps that don't require x11.