I currently have Sennheiser HD 555's (foam modded, they are pretty much out of order) driven by PC => optical => Creative X-Fi HD => RCA => Pioneer A-447. I honestly have no idea how capable the amp is to drive higher ohm headphones. I'm looking for a wide, separating and detailed sound and also more powerful and accurate punch compared to these 555's. They just simply do not deliver the experience I'm after, I like my music huge and very enjoyable since I listen to it a lot.
I listen mostly to progressive and symphonic metal and rock, for example Nightwish, Dream Theater, Kamelot, Transatlantic, Fish and Genesis but also some electronic music like Lindsey Stirling and Armin van Buuren and hardstyle like Noisecontrollers.
My budget isn't big but I've been considering different headphones, like Beyerdynamic DT 880/1350, HiFiMAN HE-300/400, Sennheiser HD 600/650, AKG 701/702 and such. I will try to find a place to listen to these as soon as possible. Headphones have this "problem" that in every price point there is no clear winner but it's up to your own tastes. I would like to hear some suggestions still from more experienced people, on both headphones and amping them. I live in Finland so basically I would not like to start ordering anything from the US.
Tell me if you need any more info, I'm all open to any suggestions.