One of the main issues, in the specification of the 5G radio access network (RAN) technology, is the design of a new waveform, overcoming the limitations of the CP-OFDM in terms of frequency localization, spectral efficiency and robustness to users asynchronism, while keeping low latency and reduced transceiver implementation complexity. In the last decade, many waveforms have been proposed in order to achieve the best compromise between the aforementioned constraints. This paper aims at comparing, as fair as possible, the performances of promising schemes namely WOLA-OFDM and BF-OFDM in terms of spectrum confinement, transmitter complexity and robustness in a typical multi-user asynchronous scenario.