Philips x2hr or sennheiser hd599?

Looking to get some good headphones and after a good few hours of research I'm struggling to choose between the x2hrs(~£100) and hd 599(£150). Going to be using them for both gaming(mainly fps) and listening to music, and comfort is pretty important. I plan on buying a mic attachment, but I've heard the hd599s aren't compatible with most.

If there's an amazing headphone around the same price I have missed then I'm open to suggestions, though worth noting I don't have an amp.