Does anybody know if the new Kindle 7" or the new Nexus 7 are ok for reading books with diagrams/images (i.e. IT manuals)? I tried quickly my bro's Samsung Gal

Does anybody know if the new Kindle 7" or the new Nexus 7 are ok for reading books with diagrams/images (i.e. IT manuals)? I tried quickly my bro's Samsung Galaxy Tab 10" and even though it's 10" I think the resolution is not enough to have a full page readable on the screen..