New from Jeti is the line of J3D and J4A Servos. These guys bring to the table high speed and high torque in an all metal aluminum cased, digital servo designed for large models. Working voltage range of 6V to 8.2V and waterproof – you cant go wrong with these! J3D “mini” size servos start at $95.00, and the J4A standard size servos starts at $150.00.