I haven't had loads of exposure to it, but most of what I have heard sounds really boring.
It's no good making a tune that sounds as hard as **** if it doesn't do anything.

Same for the sets, how can you make music that is as hard as nails send you to sleep?
Easy, play loads of stuff that sounds samey, with no variations in structure and noises.
It's almost just endless kicks.
Maybe it's just what I've heard so far.

Having said that, there are a few tracks that I like, and I have been getting quite into Boris S recently.

If anyone has any really good Schranz sets to recommend, I'd be interested in hearing them though.