Since you are interested in Cantatas (Vol 21) Nos 21, 65. 81, 83, 190, here is a list of other items that you may find interesting.
BACH / SCHUTZ / BUXTEHUDE / ZELENKA / HANDEL / MONTEVERDI / etc
Bach & Beyond: A set of original BIS CDs [15 CDs Special Price]
Dan Laurin, Hidemi Suzuki, Midori Suzuki, Yoshikazu Mera / Bach Collegium Japan, Masaaki Suzuki
[ BIS / 15 CD Box Set - released 1/Aug/2010 ]
Widely regarded as one of the foremost interpreters of Bach's music today, Masaaki Suzuki has made his name both as the artistic director of the Bach Collegium Japan and as a performer on the harpsichord and the organ.
Cantatas (Vol 47) BWV27, BWV36, BWV47
Hana Blazíkova (soprano), Robin Blaze (counter-tenor) Peter Kooij (bass) / Bach Collegium Japan / Masaaki Suzuki
[ BIS / Hybrid SACD - released 1/Oct/2010 ]
"Suzuki and company continue their excellent work in this superb series, easily the best- sounding of the complete, fuller-chorus versions currently going, done in excellent surround sound. Not much else to say here except keep it coming!" (AudAud.com)