So I recently visited the B&H store and they had almost every headphone on head fi (wow) I got to try the sennheiser hd800 and akg k701and fostex headphones with a few others. Honestly the difference between my old Samson sr850 and all those is not night and day but perhaps just a different sound characteristic. The sennheiser hd800 have a extremely large soundstage which didn't surprise me at all but it was extremely comfortable to wear on my head. The 701s had a very warm and front row type of sound that I liked alot. None of the headphones I tried impressed me as I thought they would but rather gave me a new perspective on how to enjoy my music. I think I want a warm headphone with large soundstage and very punchy bass with good treble extension. I also bought the beyerdynamic dt770 pro and for some reason my tablet can drive them to a very good volume level being 250 ohm I cannot believe it. My fiio e18 had a hard time driving them but drove them reasonably well. So I think the Philips fidelio x1 is my best bet and will be my final pair
flat headphones are boring as hell to me and have no fun in the sound so I will be keeping a distance from very flat like balanced headphones and maybe go for a more warm sounding headphone with a little fun in the mix.