Received my K7xx's today and am very pleased. I have been buying and selling open back headphones for a few months in order to find a pair I liked. I tried the Phillips SHP9500 and found them way too harsh. (what was Z thinking?) I went for the budget Samson SR850 - not bad for the price, and then moved up to the Senn 558 and AKG K240MKll. They both were good, but I found the AKG's to be a little more comfy. When I saw this drop came around again, I thought I would take a chance and see if I could get a good sound upgrade. Did I ever! Listening to a 24/96 audio file of Spyro Gyra's "The River Between" was outstanding. These truly are an upgrade and even more comfortable than the 240's. Thanks Massdrop!