All the tie bars and such are good for theoretically stiffening the chassis. They're cool if you can afford them but sometimes it'll be hard to notice a difference.

I'm convinced that the best bang for the buck when it comes to changing handling characteristics comes from playing with the swaybars...especially since you already have an EX. There are many different size combos out there and I don't think anyone can really suggest one killer setup because it all depends on what you want.

For those people who have Ground Control or Skunk2 sleeve setups, another option could be to play with spring rates front and rear. This might possibly be a cheaper option for lower trim level cars which would otherwise require the aquisition of endlinks and LCAs and all that stuff from other cars to use swaybars.