Current Headphones = Sennheiser HD598, Koss Pro DJ100, Sennheiser PC360, Creative Aurvana Live!, Audio Technica ATH-AD700, Sony MDR-V700DJ (ugh).
 
Past Headphones =  Sennheiser HD 25-1 II (too bright for me)
 
Source = Creative Sound Blaster X-Fi Titanium Fatal1ty Pro and iPhone 3GS