Hi... I've been having this, lets say curiosity, about these great headphones... I was torn about which one to buy... Here in my town there's no way of testing any kind of headphones so my decision is based only in what I read... I have a 2013 Denon receiver, so I wanted my first open-back headphones having something that can juice them acceptable enough, and for a time I fell in love with the AKG Q701. I love the idea of a wide soundstage and clarity, so that is what I look for, and after a while I read about the Sennheiser HD 598, how great they were and comparable to the Q701 but more comfortable, so I pick them up... and after almost a week I think they are wonderfully clear and spacious, and so so comfortable I forget I have them on. But now I have them, my "inquisitive" nature is leading me to read more and more about the Q701, and even, to my surprise I've found apparently the general consensus is that these are even more clear and have wider soundstage than the HD598, and that let me with need of try them, and MAYBE buy them too. But, having the HD598 already, is it worth buying the AKG q701 too? Are they really that different ? all I want is the largest an clearest soundstage I can afford, and I thought I could only afford 1 of them, but I think I can afford another pair buying them on a payment plan. My music is orchestral music. Mainly movie orchestral music (you know... John Williams, Hans Zimmer, Howard Shore etc...) using original CDs and high bitrate FLAC files. So... what do you think??? Thanks in advance!