can a pair of skull crasher headphones be worth for this gamer?

[Phazon]

I highly recommend Sennheiser headphones if you have the money for them, they aren't cheap but the quality is what you pay for.

Also you might want to look into what sort of soundcard you have. Larger more powerful headphones are usually designed to be used with a headphone amplifier or dedicated powered headphone jack. Without these the headphones won't be able to reach their performance level.

There are a few soundcards out there with built-in headphone amplifier jacks, my Auzentech X-Fi Forte is one. I use it with a Sennheiser PC350 headset and it sounds great.