[zeropointbug]

I have been using a 1512/3D 6s lipo combo (1700kv) for over two years now with great success, excellent temps, and perfect power for bashing and racing. Max temps I see in 85F weather is around 125F when racing, and 145F when hard bashing. Although a 1512 motor DOES work for a 1/8 (revo, maxx, maybe truggy), I would recommend a 1515 just for the sake of lower temps (even the temps I get are well within safe limit).

Power levels on my setup have hit 2400watts spikes running 6s G3 lipo and geared for 45mph.

If you are wanting to have a truggy in the future, I would definately get the 1515 motor, just because a truggy does not have the air flow that a monter truck like a maxx or Revo has, so they would run hotter in a truggy, or buggy.

IMO, I would get a 1515 motor, just an overall better bet, you are not getting much of a benefit with 1512, besides lower rotor enertia, a more snappy feel, and a lower motor weight as well, which might be nice in a "light weight" setup.