The second hand price of the DEX210 is near unbeatable I will admit
However, if you would go down the route of a NIB kit I would look what's being run locally, it really helps if you can exchange setup advice or spare parts. You don't need a lot of people running them, just be sure there is at least one experienced driver running a dialed version of the car. My first race car was a TRF201, and I never got it to run well simply because I lacked experience and a good setup database to compensate for that.
Re- the motors... The HobbyKing ones are quite mild for their winding... They drive as if they have 1-2 more turns in them, so the motors aren't as hot as they sound - they're solid little cans though