I love Bach and I'm about to get into his choral works. I still don't know it as well as I'd be able to decide which performance is the best about Mass in B, St. John and St. Matthew's passion, Christmas oratorio and the Cantatas. For example there is John Eliot Gardiner and the Monteverdi choir. There are very different opinions about him and co. , ratings from 1-5 star. So I want the best performance from these works, can any expert help me out please? ( Gardiner usually gets good critics for the Cantatas, but mixed for the Masses and "Passions").