Platform is best for eCommerce site

Between these two? I'd choose WordPress. There are a plethora of layouts (Free & Paid) you can choose from that can suit your needs. But I'd also look into Shopify because eComm is their specialty. Once you have your website set up, you'll need to make sure your digital marketing efforts are on point. Check out this article on I found on "30 eCommerce Marketing Tips to Increase Sales to Your Site.