Here in Britain DAB+ is the latest version of digital Radio and only works on radios that support DAB+.
According to the DAB+ website, the sound quality of DAB+ is better despite requiring a lower data transmission rate, less than 64kb per second. At the time of writing this post, Britain intends to keep both technologies running.
The drawback of this technology is the radio itself has to do more work. After extracting a data stream, microprocessor in the radio has to decompress the sound data and turn it back into sound waves.