The middle of the road is a difficult place to perch when it comes to the music of Bach these days, but there should be demand. Performers and listeners alike often find the excesses of the old-fashioned romantic approach and the new-fangled "authentic" approach equally distasteful.
Helmut Muller-Bruhl's approach to one of Bach's most monumental pieces might strike some as just the right compromise. It uses a small chorus, the Dresden Chamber Choir, rather than the one-to-a-part of the most radical revisionists. The Cologne Chamber Orchestra uses modern instruments, but it plays them with a thought to the latest historical discoveries.
This version made for German radio is full of light and air.. . . you really can't go wrong with this one.
"The second B Minor Mass released on hybrid SACD - the first was directed, superbly, by Junghänel on Harmonia Mundi - this German Radio production documents a warm, often touching performance of Bach's valedictory sacred work. . . . for surround sound enthusiasts, this presents an inexpensive option."