I've listened to quite a few Vivaldi operas being made in the current Vivaldi renaissance, including the excellent recordings on the Naïve label.
This recording is simply top-notch. All the singers are wonderful to the point where I can't extoll one ahead of the other. The orchestral playing is sensitive, yet dramatic and couldn't be played better by any other period instrument orchestra.
While this may not be among the best of Vivaldi's operas, it still has plenty of enjoyment to offer thanks to the fantastic singing and playing. It certainly kept me listening to all 3 CD's in a row on 1st listening, which is quite rare for me, given that I'm a hyper-critical listener with a M.Perf, MM. and MA in music performance etc.
Likewise, the technical quality of these discs is amazing. The balance between voices and the orchestra is perfect, while at the same time not sounding artificial through bad microphone placement.
This is 10 star set that any Vivaldi lover will love, so get it while it's still available at an affordable price.