The Phanteks NV5 is the objective winner of this comparison, securing more category wins across the evaluated specifications. Its most significant advantage lies in its storage capacity for smaller drives, offering 33% more 2.5" bays than the alternative. While both cases share several identical specifications, the Phanteks NV5 provides a superior configuration for users prioritizing high-density mounting options for solid-state storage within their system build.

Users who require extensive storage for smaller drives should choose the Phanteks NV5 for its increased 2.5" bay count. Conversely, those who prioritize traditional mechanical storage should select the Phanteks XT Pro Ultra, as it offers a 100% advantage in 3.5" bay capacity. Selecting between these two cases depends entirely on whether your specific build configuration demands more space for compact solid-state drives or larger, high-capacity hard disk drives.