I don't know if I agree with you about Mozart shitting on Bartok quartets.
First time I've heard of Schnittke is in this thread. Really digging this:
http://www.youtube.com/watch?v=HKVhi-VbNqs. I have a feeling it's all I'm going to be listening to for the next month, as I'm sort of spent on yr usual punk/indie fare. I kind of wish more "alternative" musicians had EARS, yanno?