New shoes for F45 classes

I’m currently having Metcon 6 with a heel plate insert for Strength Days and a Metcon Free 6 for Hybrid and Cardio Days in my workout rotation. I see everyone wearing Metcon 9 in my class and I have tried them in store and they feel unnecessary and uncomfortably stiff and lacking any sort of cushioning. I wanted to hear from anyone who’s using a Reebok Nano, adidas trainers or any other shoes that they are really happy with. If you have got Metcon 9’s did you have similar feedback on trying them and still made the purchase and had them grow on you or feel better than the in store trail when in classes?

I have a flat foot, so anyone with specific inputs or suggestions if you are flat footed as well are welcome