I’m not a fan of QuickClusters because, personally, I’ve found them problematic and unreliable. However, if you can get them to work, then by all means use them.
QMaster allows you to combine multiple computers into a render farm to make video compression run faster. It also allows you to combine multiple processors on one computer to compress video faster. One of these choices works MUCH better than the other. This article explains what you need to know.