Steelseries siberia v2

So i am confused which headset to buy , i was previously using the steel series siberia v2 Navi edition which i loved and they worked well for around 7 years, now my friend is saying hyper x is better than steel series so i am confused ,also is there any difference betwen Cloud alpha and Cloud...

So i have a i5-4690k running stock at the moment and i have an Antec kuhler 650 installed. My temps are a bit high when running demanding games. The color gets red and the fans are making so much noise. My case is a raidmax scorpio V and i have fans installed. 2 at the top as exhaust and 1 on...