Farther down, I'd work on the "You need PaperBox if..." section - the way the right bullets are aligned under the "p" (on my screen) makes it look like the title is not centered. I might add more vertical space before the bullets, and potentially also move the bullets all closer to the center / allow them to be more than one line.
The last section, with the colored fonts and images, looks better than the earlier parts. I'd play with adding a little more vertical space before each header and image.
Hope some of this advice is useful to you. I know you asked for advice on the fonts, but I thought since you're looking for advice I might as well offer some.