These are both WF ACA princess-cuts - so really both have excellent Asets - that said, I prefer the 0.731ct E-VVS2 because (1) the Aset shows more red going out to the four corners; and (2) I prefer the smaller table - and though it is the smaller carat weight, dimensions-wise face-up it is basically a 4.9mm square versus a 5.0mm square (and less expensive to boot).