The French do look the most impressive so far, Ireland has the loadstone of crumbling every time it comes to the quarter finals, South Africa needs to find a reliable kicker and NZ haven't been consistent enough of late. The rest IMHO are there just to make the numbers up and any injuries may start to affect performance. It will be interesting to see if they try to take Sexton out, as he is the talisman and the keystone of any Irish performance