I have been running e-commerce stores for a few years now. My current store (SkynexTech) is run from BigCommerce. I made my choice after researching the various e-commerce platforms available. I went through all the Free Trial periods one could possibly find online, comparing the functionality and usability available amongst the various e-commerce platforms. In the case of Shopify, I also ran a store for some time. The reason I made the switch to BigCommerce (and why I am still with BigCommerce 4 years later), is simple: BigCommerce focuses on the one and only thing that should matter to any e-commerce store owner that is, sales. The BigCommerce platform is much leaner, and much more focused on getting more sales. Many are those, however, that mistake feature quantity as being tantamount to better e-commerce platform. The focus should really be on quality of features, not quantity. The best and most concrete example is the "in-panel analytics" offered by both e-commerce platforms. Shopify offers way more data but a lot of that data is in fact irrelevant, and actually makes it much more difficult to draw rationale conclusions and make actionable decisions about your stores. In a sense, analytics provided through Shopify create a "fog of war" or so to speak.By comparison, BigCommerce gives you data on the number of visitors, number of products looked at, products added to cart, and of course products purchased. This is all that should matter. Anything above and beyond this, you should be relying on an analytics platform, such Google Analytics and/or Google Search Console, rather than on your e-commerce solution provider. When I log into my BigCommerce store, its not for analytics. It's for creating sales, promotions, pricing strategies, improving product design and descriptions, etc. Having all the essential data available helps me make quick, effective, and actionable decisions. If I am in need of any further analytics (e.g. top pages visited, behavior, acquisition, etc.) Google Analytics is the solution. Conclusion? Go with BigCommerce. I've tried both. If you want more sales, BigCommerce is leaner and will get you there faster.