I'm sure Hara gets the best 1 run packs for big races, but he probably uses the mid-grade cells to practice with and club race. I know everybody at my track gets spanked by an Associated driver using Panasonic 3000's and Reedy 1.15 3300's and old brushes in his Reedy motors. Infact, I've watched him have equal acceleration and rip out of corners as another driver in mod running newer batteries and motors.
just my observation