is where I went, fabulous place and rows of headphones to try. Paul and Wendy are really helpful and friendly too. Take lots of your own material to help you decide, they'll leave you to it with the volume controls and a range of headphone amps to get somewhere near your own setup. I had Grado 325's and although very good they get a bit forward in the midrange when the volume goes up which is the trait of most if not all Grado's so I sold them. The AKG 550's are very comfortable indeed and can take some serious volume along with bass and treble adjustment, which I find they do need to lift them up out of the 'flatness' they initially reproduce.