What is the difference between the QIAamp MinElute Virus Spin and the MinElute Virus Vacuum Kit?

Aside from the obvious difference of using a centrifuge versus a vacuum manifold for sample processing, the QIAamp MinElute Virus Spin Kit requires sample volumes of 200 ul, whereas the QIAamp MinElute Virus Vacuum Kit can process 500 ul of sample due to Extension tubes provided in the kit.