iPad 4 indeed is a great choice, especially if you already own an iPhone. http://us.digitalversus.com/tablet/apple-ipad-with-retina-display-4th-gen-2012-p14725/test.html#full-review
I guess Galaxy Note 10.1 would be the other option because of the stylus. http://us.digitalversus.com/tablet/samsung-galaxy-note-10-1-p14965/test.html#full-review