So I wanted to buy an ATH-M50, but it seems the prices here in the Netherlands for those headphones are a lot higher than in America. The price is about 180, for 10 euros more I could get the Beyerdynamic Custom One Pro. And for 80-100 euros less, I can get the AGK K-240 MKII (so 80-100 euros that is). I could also get the Sennheiser HD 558 for 125 euros, but I heard they need amps to get the best out of them, I'm not planning on to buy an amp since I have a cowon J3. I've heard they don't need amps. My other choices are the Beyerdynamic DT 770 Pro 250 and 80, DT 990 and KRK KNS 8400. s. If you know any other headphones in this price range (80-190) euros, name it and I'll look into them. And main question really is: do the AKG K-240 MKII or KRK KNS 8400 or MDR-1R (for 80-100 euros) blow all these headphones away for their price? and in summary, here are my headphones of choice (going from high to low price) Beyerdynamic Custom One Pro (190) ATH-M50 (180) Beyerdynamic DT 770 80 (155) Beyerdynamic DT 990 250 (144) Beyerdynamic DT 770 250 (135) Sennheiser HD 558 (125) KRK KNS 8400 (80-100) AKG K-240 MKII (80-100) MDR-1R (80 euros) HFI 2400 (70 euros) extra info: I listen to onerepublic, florence and the machine, lana del rey, the script, so I'm not that much of a basshead, but I do like some of it. I'm gonna use the headphones indoor and outdoor with my cowon J3. Not using an amp! I also like my headphones to isolate the sound. And ofcourse I don't want to hear much of outside either. Thanks for the replies!