Hi all. Looking to upgrade to FF. I have researched it and is has come down to the 5d3 or 5d2. So, I am sure everyone is waiting anxiously (?) for the 5d4 to make its "grand appearance". However I realize that both cameras are great, but I can buy the 2 cheaper and take the extra money and put it toward a lens or trip/photo seminar. So, what are the advantages of the 3 over the 2? Does the 2 have dual card slots (I currently am using a 1d3 and love the two card slots), and from what I have read it seems the 3 has better AF capability(?). Any suggestions you can give will be appreciated.