Well, count me among the fans of this set. I don't find the music fatiguing at all; lots of variety, in my opinion. Now sure, if you set out to listen to discs 1-12 all in a row, it's a bit of a marathon, but breaking it up a bit helps. (That's true for all the big Mosaic sets, though). Yes, there's a couple of unusual personnel decisions and not every session is a masterpiece, but overall, I find the music very stimulating.