The Internet is a huge field in which everyone can grow own business. Having a web site suggests a modern approach to business. Besides, an online store is free from geographic limitations, it doesn't require payments for utilities, sick leave and it doesn't take a vacation.
These are the reasons which explain such diversity of online store builders, like Shopify and BigCommerce, that enable any person having limited, or none, programming skills to establish an online presence. Ecommerce platforms are not so different from each other, be it BigCommerce or Shopify, as they use largely similar set of features - built-in payments, pre-made storefront.
If it is your tenth Shopify vs BigCommerce comparison you have reviewed - quit reading. The market for ecommerce software is getting crowded, that's why software providers improve their systems to maintain competitiveness and offer excellent service and support. Regardless of the reason the user is unsatisfied with the platform he had chosen there are lots of alternative service providers to use.
The first thing you should do is to begin by a narrow definition of what you need to assess and what kind of problems shopping cart software should solve. The common recommendation is to sign up for trials one by one and choose the best option for you to move forward.