I replaced my MX4s about 20K ago and went with Bridgestone Turanza from the tire rack.

http://www.tirerack.com/tires/tires....rtnum=06VR6TLS

The difference is a much more responsive tire by far. Great rain tire and good tread life. I'm certain there are more performance type tires out there but if you want better performance and great wear these could be it.

Joe