AuctionCut

Hi, I need much more clever and efficient solution than Ebay to integrate with suppliers and some automated marketing tools so I can spend less time on managing the store and focus on generating more sales. Does any one has any recommandations?
I've tried Bigcommerce and Volusion but they do'nt have supplier integration and I've just found out Izzonet that offers exactly that and they also have some sort of an Ebay integration tool, does anyone has reviews for this solution? I'm just about to register their trial so I will update about it anyway..

Thanks

Auctiva.com offers a lot of perks and also integrates wholesale purchasing at their site.