Solution For Purchasing And Accounting All In One?

So we have been using a stand alone accounting and stock control system for some time but are looking for a new package, initially Xero I thought with their just released basic inventory control.

However this new functionality is very primitave and not suitable at all for drop shipping so are now looking at Xero addons such as Dear/Order Harmony.

Ideally though we could do with something that could integrate with CScart to have orders exported immediately - surely some of you guys know of a total solution that all ties together that's reasonably afffordable?