Bloody Headsets G565 or G575

As the title says, can not decide between G565 (for aesthetic) or G575 (sober basic look).

1. Which is better?
2. Is their any issue with G565 internal mic or G575 detachable mic?
3. Software support for both since they are both 7.1 surround?
4. Is the 7.1 sort of a placebo gimmick?

Any other brand you can suggest, my budget is max 6k so I found these 2 as the best, want it for casual and fps gaming.