The total detection rate R versus the adopted eccentricity at the LSO (e_LSO), in the case of LISA (filled circles, red on the web), DECIGO (filled triangles, blue on the web) and NGO (filled squares). For each case, j = 1, t₀ = 5 yr, T_mission = 5 yr (see Tables 1–3), p = 1.06 × 10^-2, and t_loss = 10⁷ yr. Top panel: m_SMBH − m_sph relation set according to G12a. Bottom panel: m_SMBH − m_sph relation set according to MH03.