Shipping is a complex, rule based area with so many different solutions and each one totally different to every business. we built a module which lets you link specific products to specific shipping modules which can help with more complex scenarios.
An example of this would be for a shop selling small items, and large bulky items. We setup two All In One modules, then linked their bulky items to one and small items to the other. They manage two totally separate shipping configurations for those "band" of products to get rates for each band, then the aggregated costs is provided to the c