<p>I think Stewart Calculus is single variable and multivariable calculus, so it has everything in the second book you mentioned. I have seen Stewart used at a college, so it would be a good book to invest in. We used it in my class last year, I believe it has everything on the AP test and some additional material. My class did well on the AP exam. I got a 5 and the average score for my class was a 4.9</p>