Well I dont which one I am getting I bought a rig that looks like new off of Ebay for 180.00. I race my AD2, Revo, and Mugen MbX5t all the time so I think I will see how the stock motor does, but I am sure I will have to try to TZ in it too. I have about 6 TZ's for my Revo anyhow. I gone through 11 TZ's in 49 gallons on my Revo in the last 2 years!