Q&A: Looking for Round Cut for Pt Pave Setting

First I wanted to thank you for putting together such a comprehensive and informative website. It has been so incredible to be able to learn all this information from the comfort of home! I am sure I speak for many silent readers when I say a heartfelt thank you!

I am looking to choose a .75 to 1 ct. round ideal cut diamond. My girlfriend is more interested in the sparkle factor than the size, so I am certainly placing more emphasis on that than anything else. However, your website has certainly taught me to balance all the factors rather than going for the smallest but highest quality.

I have chosen this setting:
https://www.jamesallen.com/engagement-rings/pave/platinum-twisted-pave-shank-contemporary-solitaire-item-6863?a_aid=dmnd1357

Can you recommend a solid round ideal cut diamond for this ring? I have found the following, but wanted to get an expert’s input prior to pulling the trigger:
https://www.jamesallen.com/loose-diamonds/round-cut/0.80-carat-h-color-vs2-clarity-excellent-cut-sku-207869?a_aid=dmnd1357
https://www.jamesallen.com/loose-diamonds/round-cut/0.80-carat-g-color-vs2-clarity-excellent-cut-sku-159798?a_aid=dmnd1357

https://www.jamesallen.com/loose-diamonds/round-cut/0.80-carat-g-color-vs2-clarity-excellent-cut-sku-205683?a_aid=dmnd1357

https://www.jamesallen.com/loose-diamonds/round-cut/0.81-carat-h-color-vs2-clarity-excellent-cut-sku-171840?a_aid=dmnd1357

Again, thanks for all the work on this website and any time you take to help me out!

Thanks Mike.