On repeated listening, I've become more accustomed to the Stenz M8. It is a somewhat severe and purposeful reading, emphasizing the contrast between fast and slow sections. I rather like the tenor, which is always a big 'bug-a-boo' for me. I think Jovanovich might be the best current M8 tenor other than Johann Botha. But more than anything, I just love the way Stenz handles everything from the start of the "Chorus Mysticus" to the very final chord. I love how he allows time for each of the big tam-tam smashes to ring on. It's such an obvious thing to do that one wonders why it simply doesn't dawn on more conductors.
It's another small point, but I like how Stenz doesn't drag the orchestral passage for high strings, harps and harmonium (chamber organ), located after the tenor's first big solo. Yet, he doesn't rush through it either, which is my one big complaint about the Inbal M8. That passage IS marked Adagissimo, but it's an Adagissimo in cut-time (the half note gets the beat). Many people take it waaay too slow. For me, Stenz pegs it just right.
Part 1 I don't care about so much, but I do like Zinman and Dudamel a bit more. But that's not a deal breaker for me. Dudumel is, of course, 'king' when it comes to the choral bits.