When it comes to keyboards i've always used a standard plug n play , headset however is a different matter. I currently have the Hyperx Cloud Alpha, sound is incredible, they're well built and very comfy to wear even for long periods of gaming. They have also come down in price from when i bought mine, now only £79.99
Razer Blackwidow v2 here very comfy wrist pad and goes with my Deathadder mouse..pretty lights . But mechanical keyboards all the way. Looking to get some PBT replacement keys as I've worn down a few existing ones. Also got K70 upstairs used on another pc both great keyboards. Also got Hyperx headset fine and cosy on my big lugs
I use a Sharkoon PureWriter TKL RGB keyboard since more then a year, and I like it very much. Very good quality, low profile keys, not so loud as other keyboards, and RGB. And it's without number pad, so I have more place for the mouse. There is also a version with number pad. The quality is really very good, it looks like at the first day and it works like at the first day.