We conducted a series of experiments by varying the RAN software components in a real deployment scenario. In particular, this evaluation focuses on two widely adopted open-source 5G stacks: the srsRAN Project and OpenAirInterface5G (OAI). The deployment involves a small-scale, end-to-end 5G testbed compliant with the O-RAN specifications. As illustrated in [1], the testbed includes all major components of a 5G SA system: a monolithic gNB, a 5G Core, a RU, and a UE, as well as the OSC Near-RT RIC running as a virtualized service.