I'm currently teaching out of Stewart because that's what the general curriculum for our department is. Stewart died an insanely rich man, and I'm sure will ke

I'm currently teaching out of Stewart because that's what the general curriculum for our department is. Stewart died an insanely rich man, and I'm sure will keep making slight modification of his calculus textbook from the grave. However, I tell my students in the syllabus, which I post online well before the class starts, that calculus is centuries old and that they are not required to pay through the nose for this textbook. I regularly go out of my way to facilitate using older textbooks.