Best Reverb Plugins
These plugins are superb. The best there is in my opinion, especially for large ambient reverbs - Shimmer is excellent for this.
I use Ardour and Mixbus on OSX but really I prefer Linux. No Linux Valhalla plugins which is the main reason I'm posting here. OSX Ardour users can obviously try them. ValhallaRoom would be my number one choice choice for Linux then Shimmer. There is a survey you can fill in at ValhallaDSP. No harm in mentioning Linux. Developers think there is no demand for Linux because nobody asks. That situation may be gradually changing with Ardour 3 and Mixbus. I've already mentioned Linux to the Valhalla developer.