When comparing Resolume vs VSXu (VSX Ultra), the Slant community recommends Resolume for most people. In the question“What are the best audio/music visualizers?” Resolume is ranked 3rd while VSXu (VSX Ultra) is ranked 7th. The most important reason people chose Resolume is:
Scene switches, visualization changes and parameter adjustments can be bound to specific keys on a controller.
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Pros
Pro Midi controllers can be used to control the software
Scene switches, visualization changes and parameter adjustments can be bound to specific keys on a controller.
Pro Intuitive interface
There are helpful real-time indicators for selecting frequency ranges, sliders that show impact, etc. All changes made are immediately visible.
Pro Support on Linux
Pro Free and open source
Cons
Con Not free
Resolume has two versions, Avenue and Arena, that cost €299 and €699 respectively.
Con Not just not for Mac and only for 64 bit, but only for Win 10 64 bit
Con Doesn't support macOS
There is no download that supports macOS and they do not plan to do anything about it.