I've listened to the Schwarz M8 once through. While there is much to enjoy in this performance, I can't say that I am impressed overall. Part I is conducted in a rather brisk and straight-forward manner, without much pushing and pulling. This may be a positive in the eyes (or ears) of some, but it leaves me less impressed with both the end of the fugue and the very end of Part I. I prefer a little bit of tension and release in these two parts. Schwarz does a little bit more pushing and pulling in Part II, but not always successfully. The first Dr. Marianus section and the solo singing for the first 2 of the three penitent women are taken very slowly. Unfortunately, most of the solo singers do not sing well enough to make it work at such a tempo (more on them later). Barry mentioned the controversial ending -- and indeed it is rather strange. At the return of the Veni Creator theme from the first movement (the section between the first and second of the final five tam-tam smashes) Schwarz really hits the gas in what I assume is an effort to repeat the Veni tempo from Part 1. Okay, it makes the repeat of the theme a little more obvious, but at the expense of the feel for the music -- it sounds darn strange. Many others speed up a little bit at this section, and do it to better results. After the second tam-tam smash, Schwarz slows to a more normal speed (although it sounds slower than it really is, because of the tempo of the previous section). From the second tam-tam smash to the end he does a nice job -- and there is adequate tam-tam, cymbals, and bass drum rolls. In fact the bass drum plays a nice crescendo into the 3rd and 5th tam tam smashes.
Now for the singing -- BLECH
Most of the singers are subpar-to-just adequate. Vinson Cole in particular is ill suited to the Doctor Marianus part. His first solo is all but cringe-worthy. His Blicket Auf is slightly better, but not really even decent. Jane Eaglen is the best of the sopranos, but she really is much better on the Tennstedt DVD (at least I think that is where I've heard her in the Gretchen part). She is MUCH better than the Gretchens in Nagano or Davis -- two of the worst Gretchens on CD. One of the contraltos is rather cringe inducing, and even is noticeably flat in the Chorus Mysticus at the end. I would also say that the Bass (Harlod Wilson) is a weak link -- if there weren't so many others. Oh yeah, Soprano 1 makes herself stand out a few bars earlier than I am used to hearing in the Chorus Mysticus.
Okay, that is a lot of bad. But really, much of it is quite good. The orchestra plays beautifully, and there is great detail from the wind instruments. I also like many of Schwarz' choice of tempi and handling of transitions. However, I probably would not recommend this --
accept except to collectors.