Which Ecommerce platform is best

Business
1

I have a client and they want to build new ecommerce store so which platform i suggest him. Simple functionality.

Magento, X-cart, Zen cart, oscommerce?

2

Magento is best if you are good in PHP.
Otherwise use OpenCart

3

I prefer Magento. Easy to use and highly compatible on Libux which I use.

4

thank you all for choosing me a best ecommerce platform.