Mixbus has a devoted following. Harrison makes mixing consoles. The website indicates they originally developed the software algorithms to allow their digital consoles to accurately emulate the sound of their analog consoles. Those algorithms are the heart of the Mixbus audio engine. The software closely emulates a mixing console. If you have a history with live sound or analog audio recording you should quickly feel comfortable using the software.
Two cautions however. (1) The software is available in two packages: Mixbus and Mixbus 32C. Check
+++ THIS +++ webpage so you know which package you want. (2) They publish their plugins in LV2 format. The LV2 plugin format is not widely accepted on the Windows platform. Mixbus and Audacity are the only two programs that I know will accept them. It should be noted however, LV2 is the preferred plugin extension for Linux and is an open source extension