OpenCR1.0

Perfect for my use case. It also has CANbus port with transceiver on board! The only caveat is the Ethernet. It would be great to have an Ethernet port as it is one of the essential ways to control robotic systems when using ethercat

This controller is perfect for small robots in terms of the features offered:
Native servo ports
power connectors
High amp supply for 5v boards
Built-in, high quality IMU
Fast processing speeds

Negatives:
High cost for what it includes
USB connector is weak and tends to break off

The openCR board is a great single board package for XM servo control that combines several convienient features in a single board: IMU, power adaptation and servo control. The device is reliable and easy to use. The addition of a microphone aids in debugging. I would give it a 5 star review but the price and delicate usb connector are less than ideal. Overall though, this is a solid product for people looking to control a XM servo.

Pros:
+ Great controller option for the new line of X-dynamixels (though the options are limited)
+ Convenient powering options (I like the on board T-connector)
+ A great integrated IMU (one of the better ones I have used)
+ Built in sound is suprisingly useful for debugging and boot sequence notifications

Cons:
- Needing to hit buttons to put in programming mode is inconvenient and made worse by being hard to hit on the board.
- Clock timers are prone to memory crashes issues
- Upload time is very long for even simple sketches
- Very very expensive board