I already have a Westone UM1 for use when I'm out commuting, so now I'm looking for a nice gear for home/office use. Of the following, which would you guys recommend the most? NAD Viso HP50 Senn HD 558 Senn HD 598 I'd prefer it if it needs no amp, but I guess I could buy at least a Fiio E12/E17 if its needed to shine. From reviews that I've read, I am leaning towards the HP50s, but its weird look is somewhat putting me off. I'm already imagining the weird looks that I'll be getting from my family/officemates with the HP50s. The Senns look really good, but they are open-backed right? Does it leak sound by the bucketload? I usually listen to acoustic, female vocals, classical and a little of pop/rock music. Thanks.