Speaking as someone who owns the Philips Fidelio X1s and has tried the AKG Q701s, I think you would prefer the Fidelio X1s for their comfort. I've heard people getting used to the bumps on the headband, but I couldn't get on with it. AKG Q701s require amping depending on the source (probably not from a PC) but sound really neutral - but not sterile or boring. The Fidelio X1s are, on the other hand, much more fun for listening to music and have nice, punchy bass. The Fidelios are so comfortable, that I often forget I'm even wearing them, compared to the Q701s which were always present. I think the Fidelio X1s are better, personally, but it depends on whether or not you have the means to drive the Q701s, can deal with the headband, and prefer a neutral sounding signature. I feel compelled to say that they have a little bit wider of a soundstage, but not by much. Both are fantastic options, but I'm the proud owner of the X1s, not the Q701s.