I have the Nomadio Sensor and React and really like both of them. They replaced an Airtronics M8 and, although the Airtonics is a great radio, I like my React better. I have never used the DX3R but I have held it in the store. At the time I was ready for purchase, the forums were alive with reports of the DX3R having binding problems so I went with the React. The DX3R felt really good in the hand and had a nice balance to it very similar to the React. If the DX3R binding issues have been sorted, it really is somewhat of a toss-up between the two. The React does have 2-way communication between the receiver (transceiver in this case) and can tell you speed and temperature (if the sensors are installed), and receiver voltage right on the radio display. You can also set audible and sensory alarms for parameters that go out of a set tolerance.