speed controller for a mid size (>100 lb) robot

im looking in to building a small bot and i need to know if the specs on this are decent for the price
full spec list:
The AmpFlow Dual Motor Speed Controllers operate at 6 to 36 Volts and can handle 160 Amps per channel. They feature adjustable braking, acceleration, and current limiting.

A BEC (Battery Eliminator Circuit) provides a 5V power output for use with radio control receivers or other devices.

Two mixing options are available. Each joystick can operate one channel independently, or a single joystick can operate both channels for tank-like steering.

Over-current and over-heat control logic prevents meltdowns and provides the maximum current even under stalled conditions. The maximum current limit is adjustable.

The 160A controller measures 8.80" L x 4.80" W x 3.40" H. Weight: 2.5 lb.

Additional features:
* Three 5 pin finger latching encoder inputs for full servo control
* Additional third channel for low-current switching of auxiliary device
* User selectable servo feedback: Encoder or Analog voltage
* Full RS232 serial command and setup
* Multiple-operating modes: Normal PWM, Torque, Velocity, Servo-Position
* Manual control inputs (Step/Dir) for each channel (Left, Right, Aux)
* Robust signal processing for smooth, reliable fail-safe operation
* Indicator LED's show direction, power, over-temperature, and board status

selling for 495
is there a cheaper alternative?