A) I need the most basic shopping cart, that allows to sell from my website and offer discount coupons. Nothing more than that.

B) In addition to basic shopping cart functionalities, I also need inventory control and order manager tools.

C) I need to ship my products. I need to be able to automate USPS / shipping cost calculations, or offer complex custom shipping rates. I might also need handing fee and sales tax calculation.

D) I sell downloads, such as mp3 files, software ebooks etc. I need tools that allow secure delivery of downloads and prevent illegal downloads from unauthorized users.

E) I sell both tangible products and downloads. I need all available shopping cart functionalities and tools.

F) I would like to use your software not only as the shopping cart, but also as dynamic content management, such as for the blog, news, FAQ etc. sections of my website.