What is the best online store format?

You guys ran off topic but after all the research i have decided to go with corecommerce.The trial helped me out alot.It's the best for the price.

What is the best online store format?

I see alot out there,,checking the prices and options they offer.Any suggestions,I already have my domain name,,,,looked at yahoo small business,,godaddy,,volusion,,bigcommerce,,3dcart ?????