What graphing software do you use for your illustrations /sci/? I've been using Matlab for some time and it doesn't have some very basic things needed in graphing software, like patterns for bar charts. I had to post process the figures in illustrator, which for some reason turned a 40KB eps file into a 1MB eps file.
I need an easy to learn and use software for graphing that has everything. Cost isn't an issue (I pirate everything).