I've got to say, i'm sure if you get any of the top 6 tyres, you'll be very happy indeed. All are very good tyres and i imagine the performance difference between them is small. Buying tyres is not a decision that can be made by looking at tyre tests alone. Sometimes i see the Contisport 5/Assymmetric 2/PZero's coming top in everything, other times i see it coming 4th or 5th.
Therefore, when it comes to this level, driving feel is important and probably a deciding factor, as all will deliver very similar performance on paper. Bridgestones traditionally deliver very good driving feel, but they fall down in the wet. Conti's/Assymmetric's deliver slightly less feel, but are better on paper. Michelin's deliver a good feel too (apparently), last longer and are grippy, but are quite expensive (EDIT: well, they used to be more expensive! Apparently not so now!).
At the end of the day, pick a tyre in the top 6 and you won't go far wrong.