Several WF-in-DFT embedding studies addressed the accuracy of excitation energies of chromophores in an environment. In one of the contributions involving our (JN's) lab, we have investigated the effect of the choice of the wavefunction method, ranging from CC2 and CCSD via CCSDR(3) and CASPT2 up to QMC . But also of the type of active-system electron density used to construct the embedding potential for relaxing the environment's density has been analyzed in that study. Besides a state-universal approximation, also state-specific approximations (leading to state-specific embedding potentials) were tested. For the excited states, these were approximately constructed in terms of ∆SCF-DFT type solutions (see Section 6.2.1), or directly from the wavefunctiontype calculation.