Best ECommerce website for 5 - 8mil annual revenue

[rewird]

Good Afternoon, 

 

The company I'm currently working for part time wants to switch from their rather dodgily and shitty built Drupal based site to a easier, more secure less tech intensive ecommerce platform. I've looked online and found a few good sites but I'm looking to see if anyone has experience with any moderate to large businesses running on an ecommerce platform. Annual sales online are ~8mil AUD.

 

Ones I've looked at are: BigCommerce, Volusion, Shopify Premium and Magento. 

 

Thanks in advance =)

[PeachyUwUSenpai]

wait they were doing 8 mill a year on a drupal website wtf

[rewird]

Yeah, this change has come due to the 'IT' guy who designed the drupal site trying to rip off the owner; thus i've had to fix everything.  They were using google drive for file storage until I setup a server for them..