MrFodds

100% horseshit
 
 
All the prices went up O_o. I'd say go with the cheaper option between the ACX 2.0, MSI TF V and Windforce X3

PCPartPicker part list / Price breakdown by merchant
 
CPU: Intel Core i5-4690K 3.5GHz Quad-Core Processor  (£167.50 @ Amazon UK) 
Motherboard: MSI Z97-G55 SLI ATX LGA1150 Motherboard  (£87.56 @ Scan.co.uk) 
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive  (£35.94 @ Aria PC) 
Video Card: Gigabyte GeForce GTX 970 4GB WINDFORCE 3X Video Card  (£249.99 @ Ebuyer) 
Case: Corsair Vengeance C70 (Black) ATX Mid Tower Case  (£82.99 @ Amazon UK) 
Power Supply: EVGA SuperNOVA NEX 750W 80+ Bronze Certified Semi-Modular ATX Power Supply  (£62.71 @ Amazon UK) 
Total: £686.69
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-12-09 19:31 GMT+0000
 
Then this is a much stronger build. Save up a bit more money for a decent CPU cooler and you can OC that thing a good way. Recommend the Nepton 240m/280L, NH-D15, 212 EVO

Welcome to the forum!
 
Corsair Vengeance 1400 and HyperX Cloud are great choices, but they're slightly over your budget (Vengeance 1400 - 79.99$ on Corsair's website, HyperX Cloud - 89.99$ on Newegg) and unfortunately, they're both analog, or, they have 3.5mm cables, instead of USB cables. That being said, virtual surround, which is what you get with USB digital headsets, isn't really that great some people, personally I like it more than normal analog headsets now, but it's really a personal choice.
If you can find them, take a look at the Corsair Vengeance 1500v2. I have it, and I have to say that the sound quality is great, it has Dolby virtual surround (digital headset - USB cable), great microphone quality, nice software and they're pretty comfortable.
 
Edit: I found Corsair Vengeance 1500v2 on Amazon for 70$ - http://www.amazon.com/Corsair-Vengeance-Dolby-Gaming-Headset/dp/B00EXPNFQO