I've had the DOD Stereo Chorus and the Corona and the DOD Bass Stereo Chorus.
The DOD's are both dead quiet and are very lush. DOD can be hit and miss but the Chorus' are wonderful.
The Corona can dial in that sound and more. Just takes tweaking and with the toneprint editor the world is your oyster. No weird extra plug to buy. and much lighter if those things matter to you.
Wich differences find you in both DODs? Volume drops? Noise? Bottom end loosing?