SilentiumPC has announced its latest Midi Tower, the Armis AR7X TG RGB. The case costs around £125 (~ US$161) and includes tempered glass panels along with four Sigma HP Corona RGB 120 mm fans and enough space for up to 420 mm long GPUs.
https://www.notebookcheck.net/The-SilentiumPC-Armis-AR7X-TG-RGB-A-colourful-and-feature-packed-yet-affordable-Midi-Tower-case.407076.0.html
The case is not in stock on Amazon yet, but it should arrive shortly.