For NBD in DMSO, we see that the absorption spectra generated using all three E-FC approaches are in excellent agreement with each other and with the experimental absorption lineshape. In contrast, the emission spectra from all E-FC methods are broader than experiment. The E opt -avg 10 FTFC and the E-sum 100 FTFC methods are in impressively good agreement with each other, showing that the use of average FC lineshape can be representative for most snapshots while presenting significant computational savings. The E-avg 10 ZTFC emission spectrum shows additional over-broadening due to the presence of the high-energy outlier VDEs.