Only second hand experience here. Kyosho (nitro version) out of the box has been amazing. Friend just sets it down and the thing handles amazing.
On the other hand, the Tekno is just showing it's face out here, and people are blown away by it, and those driving it are in love with it. Those people are usually coming from Mugen or Losi though.
My impression is they are both really good (as are many others) but it depends upon your driving style and how much setup is required to make it match your driving style.