When you say they are not accurate enough are you refering to the reproduction of the sound, or just the positioning of sounds within the game?
Anyway...
If you want a mic with the headset then look at Sennheiser PC160 or 150's. They use similar drivers to HD25s just not as refined.
If not and as you obviously dont have a problem with spending money on good quality earphones look for HD25's open backed, very durable and excellent quality (about £100) HD650's which are closed back and even better sounding and will set you back about £300.