Windows 7: Headphone questions

Hi

I have always been listening to music when I have been gaming but lately I have started to be interested in headphones that sounds really nice & that focus more on the sound quality but since I have never really bothered much before I am a bit clueless and all I can do is read reviews, I bought a pair of Denon AH-D510 and they did not sound nice for me with my Asus Xonar DG sound card and after some listening I found the ear cup being a bit small and hurting a bit, so I have been reading up on these ones Sennheiser HD 598 and everyone gives them a thumbs up.

Currently I am using these Tt eSPORTS Shock Gaming Headset with the 7.1 Virtual Speaker Shifter and dolby headphone activated and EQ mode is set to Treble and I think this sounds ok, but if I turn them off and use the Hi-Fi button they sound lack of words but deep & not clear anymore.

So if anyone could enlighten me & give me a few tips on a good pair of headphones that don't cost to much. 300 dollars would be the max for me

Corsair do some really nice headphones in your price range.

Read up and seen a lot of youtube videos and regardless of how much a fan I am of corsair stuff but headset don't seem to be their strong side same as their keyboards & mice, had them and they broke in about 6 months & caused me BSOD, why im looking for just headphones since the mic on my webcam seem to do a really good job