Thoughts on Snow Leopard and USB to DAC audio

With the new OS and my 1Gb MacMinis, I'm wondering what the effect will be of this OS on the music they process... any thoughts on the matter?
I just bought a mac mini 1gb with airport express and ipod touch. it did not come with snow leopard. my next purchase will be a dac with toslink input. so far I am very impressed.
From reading several different reports on the Snow Leopard....

Applications should launch faster along with faster interactions times like syncing songs.
upgraded all my macs to snow leopard on friday. some nice features. it is designed to make the latest macs perform faster. safari 4 has a new interface. expose is nice. make sure your apps have an update for snow leopard before updating. i had to update a few before they would work.