Pro Boat has updated the Impulse 31.

Version 2 has updated electronics by Dynamite, including an 80A ESC, which I tested this weekend and was very pleased. Very smooth throttle off the line, larger 12-gauge wire, 4mm contact, and a Lipo/NiMH external switch.

http://www.proboatmodels.com/Product...rodId=PRB4250B