The Best Ideal Cut for Princess Cut

[chewyTBG]

Which has the best diamond of the following brand names?
Whiteflash ACA
Blue Nile Signature Ideal
James Allen True Hearts
Brian Gavin Signature

 

[HopeDream]

I would rate BGD and Whiteflash above James Allen and Blue Nile, because BGD and Whiteflash are smaller companies who care more about cut quality.
You might want to also consider a Solasfera princess from GOG, If you're looking for top light performance.