Efficiency ratio worst, since it samples far away holes A with the same probability as close ones. The fully weighted excitation generation full:full performs best per iteration, but it is outperformed by unif:full when taking wall-clock time into account, since the choice of the first particle is near-uniformly distributed (see Section 4). The CAS (30,30) has no excess of empty orbitals and surprisingly unif:fast is the fastest combination. The fast-weighted hole-selection unif:fast performs better (by roughly 2.9 2.2 ≈ 30 %) than the fully-weighted hole-selection unif:full.