Storage devices and systems are capable of dynamically managing QoS requirements associated with host applications via a management interface. The management interface may the enable storage devices to: (i) decide which data needs to be transferred back to the hosts, (ii) choose to skip portions of the data transferred back to the hosts to improve throughput and maintain low cost, and (iii) operate contention resolutions with host applications. Furthermore, storage devices and systems may achieve a virtual throughput that may be greater than its actual physical throughput. The management interface may also be operated at an application level, which advantageously allows the devices and systems the capabilities of managing contention resolutions of host applications, and managing (changing, observing, fetching, etc.) one or more QoS requirements for each host application.