Best Optic For P226 X Legion SAO?

I really want co witness with the rear sights. Looking for the best option. Price is not a factor.

Also, I’m not sure if I have an astigmatism but the standard Eotech, with the halo and dot was VERY fuzzy to me. I could see the dots around the halo and it was all blurt. With that, should I get a 3 moa or a 6 moa dot? I’m thinking I should avoid the halo all together.

Thanks!