Sennheiser 363D vs AKG K702's

I was looking into getting a new headset mainly for gaming but the microphone is less important to me over sound quality. My budget was 250 and the sennheiser 363D seems to have glorious reviews for a gaming headset however it seems more people tend to say the AKG K702's have hands down the best sound quality you can get anywhere, (they are reference classified by AKG so it makes sense.) So my question is, does anyone know from experience which headphones are better, and if the AKG's are that much better, is there a dac or sound card that will effectively drive them for 30 dollars of under?