I tend to run Orion and Check Point 19T's in my sedans but in 1/12th the Trinity Komodo 19T's are the fastest. They have weaker magents and turn a lot more RPM. Thats no good in a sedan but in a light 1/12 car its a rocket.
I run Red springs and use F-Brushes or Reedy 767's. For a 100x50 carpet track I gear around 2.05" roll out.
What I run: Schumacher Mi5/Associated RC10R5.1/Associated RC12R5.2/Futaba/HobbyWing/Team EA Motorsports/BSR Racing
Where I run: Florida Indoor R/C Complex/Thunder Racing/Florida On Road State Series