Hello! I have Beyerdynamic T1 and M3, and now thinking about DAC. RE7 and RE8 are too expensive for me. I'm choosing between RE5 and RE9. I like RE5's compactness... How about sound? Does it compare in sound quality with RE9? Sometimes I like to listen heavy music, and somone says that...

Sound Card: ASUS Xonar Essence STX. What version of DT 250 will be better? I want to upgrade my old Sennheiser HD 280 to better closed headphones (cost <330$). I like 280 for their detail and vibrance sound, but sometimes not enough bass, volume(lengthy) and a panoramic. Music: Metal...