Which platform to develop a MarketPlace website
I'm a designer and i'm starting to build a new website with a third-party developer. This website will be a Marketplace where users will be able to sale their stuffs to other users. Every users will need to be logged in to "Buy and download" or to "Upload and Sale". We would like to be able to select some contents, users to enhance it on the home page for instance...
Some famous examples :
I would like to know what is, in your opinion, the best platform to start this project ? Wordpress, Joomla ? an other one ? Which one is the more flexible ? The more secured to include payment process ? ect...
Thanks you so much for your responses !
If you need more details, please ask :)