Self-Hosted Ecommerce system recommendations

Hello,

We have an furniture online store and we've been using Opencart for the last 6 years for it.

I was wondering if there is any other system worth switching too. I am not interested in online platforms like Shopify or Volusion. I have ruled out also WordPress/Woocomerce as I am pretty sure it won't hold our business with all the feature customizations we did over years. I was much into Magento but once starting it I realized the costs are too big for us.

So, except those, is there any other self hosted open source ecommerce which is great and worth mentioning?

Thanks