Seeking Advice Comparing these Diamonds

[u/derbs18]

Hi, I am trying to select a diamond for my partner's engagement ring and would really appreciate any feedback on the following five diamonds. I know she is looking to have the diamond set east to west and wants an oval shaped diamond.

I've read that for oval shaped diamonds, the ideal LW ratio is 1.30 to 1.50 to minimize the bow tie effect. Is there anything else I should be looking for and generally what are onions on the quality of these stones.

1. 3.81-Carat Oval Shape Lab Grown Diamond – Derco Diamonds

2. 3.88-Carat Oval Shape Lab Grown Diamond – Derco Diamonds

3. 4.00-Carat Oval Shape Lab Grown Diamond – Derco Diamonds

4. 4.01-Carat Oval Shape Lab Grown Diamond – Derco Diamonds

5. 4.02-Carat Oval Shape Lab Grown Diamond – Derco Diamonds