If these are all from GOG, I'd rely more on what they said they look like in real life rather than what they look like in the ASET's. I know it's hard, but you won't be looking at the ASET, you'll be looking at the stone. Ask which one has the least obvious bowtie, which one is brightest, etc. They'll be honest with you.
I can not comment on the diamonds because they belong to an identified vendor. I would however ask Jonathon to make you a short video with all four diamonds on a slotted tray and see which one your eyes pick.
It was a process of elimination for me, from the video labelling the diamonds from the left:
#4- i didnt like the shape very much- maybe longer????
#2 and #3 have the bowtie area that just doesn't grab me. I do like broad flashes of light like an OEC or, the AVR that GOG have, but somehow in these pics, #2 and #3 just doesn't grab me. However, out of those 2, #3 is slightly better than #2= around 36s & 48s and the 1.10m mark #3 seem to perform better/ appear brighter around the entire stone.
So, i am left with #1. I do like the overall appearance /shape of this stone. At the start of the video, #1 looks whiter. Performance wise compared to the other stones, i think that it has small splintery light compared to the broad flashes of the others.
GOG liked the two on the right, 3 and 4. These were the two I liked as well. 4 is longer than I typically like at a L/W of around 1.50 but I kinda like it. Tough decision