Having tried lots of different makes over the last 30 years - Arion, Boss, Line6, MXR etc this one beats them all. It sings like a choir!
There are 3 modes - Chorus, Tri-Chorus and Tone Print.
The 'Chorus' or normal mode is great and probably better than most of the chorus pedals out there. The 'Tri-Chorus' is fantastic, instant 80's Rock chorusy jangle if you want it or it can do warm and lush layering. It used to take a rack unit to get this kind of sound! The 'Tone Print' mode customises or tweaks the pedal to give signature sounds of great players. You download the Tone Print into the pedal via USB. I tried the Dann Huff Tri-Chorus sound and was amazed.
The controls are easily understood, the Tone control is especially handy when you need it to be subtle.
Now that TC have finally released the Tone Print Editor App you can customise the Corona Chorus to your spec to essentially create your own unique chorus pedal.
Lastly - it's clean, very quiet and tough. It's a keeper.