Best eCommerce Platform for a Growing Site

Hey guys,

Just wondering if there are any experienced ecommerce guys out there.

I am working with a client and we are rebuilding their ecommerce site.

They currently have around 250 SKUs and traffic of 10k per month and about $10k in sales per month.

They are UK based and looking to expand to US so expecting the traffic to significantly increase.

Just wondering what ecommerce platform you guys would recommend us building the product on.

One factor that I definitely want to integrate is an affiliate option. Since this company manufactures their own product, we want an automated platform for affiliate markets to sign up and send traffic, similar to Amazon.

We also would like a distributor centre integrated into the platform. We could use a different software to integrate this but it would be nice if the ecommerce platform had this option too.

Currently the site is built in Magento but we are fine with scraping that and replacing it with something else. Any suggestions?