I'm preparing a large text for print. I'm using Arial but actually don't like it. I've been looking for a replacement (Open Sans, Droid Sans, Lato, PT Sans) but all use considerably more space -- affecting the layout too much -- than Arial. Of course I could lower the font size but worry that the legibility will suffer too much. I tried Calibri as well but found it harder to read than Arial if I didn't increase the font size.

So, my question is, is there a good, readable font that is as economic with space as Arial is?