I work on the basis that the two most important parts of any car are the brakes and the tyres.....the brakes because they could save your life, and the tyres for the same reason as well as the fact that they are the only direct connection between you and the road......I don't scrimp on either so my advice would be to read lots of reviews ( do a search on google and you'll find loads of tests by magazines etc. with further notes from the public who have them fitted ) and then get the best you can afford.
Everyone will give you advice on which tyres are best for them, but everyone has different requirements so you have to decide which are best for YOU..... so take and use all the advice you gather carefully and then make an informed choice.
Not sure if i've helped with this or not, but hopefully I have.
From my point of view, I will either be getting Continental ContiSport Contact 5P's or Goodyear Assymetrico 2's when I have mine replaced, but i'm not sure if they make these in your size.
Let us know what you go with.