I'm also (apparently one of the few) who prefers the LTC-R. The P37 and R9R both do not do well on our smaller indoor carpet track, and most are running the Speed 6 or the LTC-R. The LTC-R feels better to me, but I have also spent the most time setting up the car with it. Steering is good on and off power, while I have no problems with rear grip. It does feel less stable to me then the Mazda, but my car in general prefers gentle inputs, so it seems to suit my driving style more.
I am not sure I have ever seen someone out here with the Subraru or Audi bodies, and have not seen a DNA in a while.