In the mono tube range, try Bilstein, Koni,, or deCarbon.
If you've got bucks to burn, try Ohlin or Penske.
If you're going to be doing some serious corner carving with full wheel wells, I recommend you take a look at a track/Panhard rod or a Watts link on the rear. Either of these will keep the rear end under the car and reduce the likelihood of chewing up your tire sidewalls.
