Zoom into the AGB region of the H-R diagram. Lines denote solar metallicity evolutionary tracks (Marigo et al., in prep.) and numbers indicate the mass on the early-AGB. Yellow/grey lines mark the region of carbon-rich AGB stars with C/O  > 1.0. Black lines mark the region of oxygen-rich AGB stars (C/O  ≤ 1). For better visibility, the track of the 2 M_⊙ model is plotted with a dotted line. Different coloured symbols refer to the luminosity and effective temperature determined in this work (for the two different approaches A1 and A2 at visual minimum/maximum).