Shopping Cart?

[ChampJames.]

Hello All,

I am making a website, where clothing garments can be purchased and printed with slogans etc.
I need to include a shopping cart which is easy to edit, update, order and show different colour availabilitys.

Through my host, I have available;
CubeCart
OS Commerce
Zen Cart
Magento
OpenCart
phpCOIN
PrestaShop
TomatoCart

I wondered if anybody has ever used any of these e-commerce site builders. If so, please could you give me some advice on which ones to use and which to stay clear of.

Thanks