I took a look at the 3rd edition, and i actually like it less than the 2nd. For one, the text is smaller, and everything seems very scrunched together - like, there's less space between headings, etc. Also, the margins are tiny - there's no room for notes at all! Their occasional charts are better (nicer formatting - but same info), but for me, this doesn't make up for the space and font issues. I'm sticking with the second ed.
Q