8" DP-FE2 vs 6" DP-SWB/3 DOME PORT

Has there been any comparison on all aspects of the

Subal 8" DP-FE2 DOME PORT & 6" DP-SWB/3 DOME PORT.

If I use a 17-35 roughly, would it make any difference ?

Obviously the price of the 2 dome are 1/2 of each other.

If I don't have any 10mm, would I ever need the 8" dome ?

What's the widest the 6" dome without terrible distorsion ?

Please point me to a few underwater pictures taken by either if possible

Thank you !

I use to own the 6" and replaced it with the 8' port. Shooting the 17-35. It broke and Subal upgraded it to the newer FE2 which I believe is actually a 9" dome. The 9" dome is clearly superior to the 6" dome. Particularly in the corners when zoomed out.