I am a php developer, now I am deciding to step into eCommerce however there is a small confusion regarding startup.. I want to learn customizing and hacking but first want to make sure that I start with best available option, I have short listed Oscommerce 3.0.2 and Magento . No doubt Magento is complete ecommerce solution however, oscommerce on the other hand is more efficient, Oscommerce has now 3.0.x version released (after so so long) . So my question is which one from Magento and Oscommerce is best to start with as customizer as well as user ?