There are many shopping carts out there that you could select for your business but be sure that you do your research and choose the cart that’s right for YOUR business. Not just because your competitor is using it! The cart we use the most is 3D Cart which provides most of our clients with exactly what they’re looking for.
Truth be told, there’s always going to be “something” about your shopping cart that you dislike. Nothing will be absolutely perfect, but you can find something that’s pretty close. I’ve found that 3d works for the majority of my clients and offers an affordable startup option so it doesn’t break the bank. You do not have to purchase software up front or have a huge initial cost. You can do a free trial and if you like it, their monthly plans are very reasonable.
A few other carts that I like are Ecommerce Templates, Big Commerce and Magento. Magento does have a large up front cost so it’s not as feasible for small businesses.