I received a 325is for Christmas!
Since then I've put in only about 30hrs and so far I'm very impressed. I normally have a serious face when listening to new headphones trying to focus and all but I found myself with a huge grin listening to these. They just sound great and are fun to listen to. I'm currently just using my home theatre receiver, a Marantz NR1501, with some higher bitrate mp3's airplayed via Apple TV which sounds great already... to me at least. Will be discovering FLAC's and mp3 converted FLAC's down the road to get the most out of these headphones.
I've also picked up a Fiio E11 with the L9 LOD for when using my iPhone. It does the trick but something tells me I should get the JDS Labs cMoyBB.
Anyway, those are my initial thoughts. Hello to all head-fi'ers and 325is owners here.