New member here and have been learning a lot. I currently listen to my 6th Gen iPod with low quality mp3 files through my Grado SR60i and recently purchased a Fiio E6. I'm thinking of going up the ladder a bit to the SR225i and basically hoping to retain the same sound with a bit wider soundstage, tighter bass, and more detail. I could go up to the RS2i but I'm thinking what's the point with low quality source material. I also read the RS2i can be a bit shrill in the treble dept which is also what I read about the SR325i's. The Sennheiser Momentum has caught my eye but I'm thinking its better suited for current pop/hip hop music. I mostly listen to "alternative", classic rock, 70's punk, 80's new wave, honkytonk, blue grass, some 80's metal, vocal jazz, and classical/baroque/Italian opera.