You might be surprised Asamel. The top acts like Avicii, Van Buuren, Tiesto, play using LPs or 24/96 files. The minimum is 16/44.1. The lesser DJs who have no access to their label's vaults are limited to 16/44.1. They aren't sourcing music from iTunes but rather from places like Beatport. Rule of thumb when performing is no file played should be below 320kbps, ever. You will find thin written in CDJ manuals by Pioneer, TAD's parent company which is serious about sound quality. You will also find this recommendation made by Traktor (one of the most used software database and performance pllatforms). Perversely, these kids are actually being exposed to high resolution playback albeit for the producers and performance the need for higher resolution is a competitive advantage. Given that the SR systems are arrays with kilowatts of power behind them, you can imagine what would happen if they played low quality files.
That said there is one genre that will peel paint of the walls. It came and went very quickly. Twice actually. The equivalent of post-modern architecture in dance music. LOL. Yes I do NOT like Dubstep! House is deeply rooted in Jazz and Funk while Trance and Progressive house is deeply rooted in classical music in terms of layer structure. Synth samples are derived from polyphonic samples of actual instruments. One of the songs that put Tiesto on the map (he was mentioned in the article) was his take on Barber's Adagio for Strings. Really
I personally went into Jazz and Classical because I was retracing influences and found the roots to be oh so fulfilling. I'm in no way an isolated case. I think the need to broaden choices in innate. I like what Tim said. If you don't like it, you're listening to the wrong thing so go find the good stuff.
The problem with new music is that the gems are still buried under a lot of crap. Old music has the advantage of being curated over time. The cream having risen to the top so to speak.