What is the best future proof Wordpress e-commerce theme?

Hi guys,

I'm planning to start my e-commerce webshop and currently have the Flatsome theme which is very customisable but I can imagine this comes with speed reduction.

So wondering if you guys know any other good themes you could recommend?

I believe these will be of some help to you so do check them out: Divi Theme, Astra Theme, Shopkeeper, Porto

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wpastra and betheme is my choice