Enfinity is an elegant and flexible WordPress e-commerce theme with an adaptive layout and many features inside. It has got a (really) powerful admin panel, you can try it by enter the preview? Enfinity supports WooCommerce, Camera slideshow (a free Wordpress plugin to display adaptive slideshows with great transition effects… developed by me), BBPress, WP Super Cache and WPMU (Wordpress Multi-User or Wordpress Network), only to name the most famous ones.
Demo: http://themeforest.net/item/enfinity-adaptive-ecommerce-portfolio-wp-theme/2663674