The Antec Flux Pro is the objective winner of this comparison, securing more category wins across the evaluated specifications. Its most impactful advantage is the inclusion of fans, which provides a 50% improvement over the competition. This superior cooling configuration makes the Antec Flux Pro the more capable option for users prioritizing thermal management and out-of-the-box airflow performance without needing to purchase additional hardware for their system builds.

The Phanteks XT Pro Ultra is the better choice for users who require extensive storage capacity, as it offers a 50% advantage in 2.5" drive bays. While the Antec Flux Pro is the preferred selection for those focused on cooling efficiency due to its superior fan count, the Phanteks XT Pro Ultra remains the ideal solution for builders who need to accommodate a higher number of solid-state drives within their chassis.