Every business has different priorities and needs. Therefore there is not the best shopping cart for everybody. Currently we use Volusion and we are pretty happy with it. I'd recommend checking out Volusion Review it may help your decision since it has comparisons of Volusion with Yahoo Stores platform. Good luck.
i guess yahoo is the best ..in terms of security and features..people say zen cart cuz many of them did not use yahoo cart...
Zen Cart and Yahoo are very different. Zen Cart requires much more customization but does not charge the monthly and transaction fees that Yahoo charges. Basically, are you one to tinker around with a cart, or do you want plug and play? Our solution does not charge transaction fees and has a lot of features. If you are looking to save money and you want a very basic cart, Zen Cart would be a better option.