I think it would be a compromise, either way. To stack tape, you get a "better" sound, but it may lack some of the ambience of the venue, audience noise, any kind of space. But a center AUD tape may contain too much of these things.
I tend to like center AUD tapes, even if they are too chatty, or whatever. To me it is a better representation of what the concert sounded like. But then again, I do appreciate stack tapes, as the music is generally better in quality.
There is also an arguement that the sound won't fully develop until it is a good distance away from the stacks, and that by getting in too close, you can move inside the sweet spot, making your recording less than what it could have been. Sort of like standing too close to your stereo, it sounds like the speakers are way off to the left and right, rather than sounding like you are bathed in stereo...
I think you'll have to experiment, and make some educated guesses. All of the AUD tapes from a recent Tony Rice and Peter Rowan shows I saw sucked ass as the music was real quiet and the corwd was real talkative... The one stack taper apparently came away with a good pull, but I have yet to hear it...
Good luck, let us know how it works out!
Terry