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The MSI mise look pretty good. That Redragon is practically the same as the MSI DS200.
The R9 290 is fine, but if you can stretch your budget by $20-50
http://www.amazon.com/s/ref=nb_sb_noss_2?url=search-alias%3Daps&field-keywords=GeForce+GTX+970+4GB&rh=i%3Aaps%2Ck%3AGeForce+GTX+970+4GB
Well, if you want a perfect RGB mechanical keyboard you should get the Corsair K70 RGB (£150-60). If you don't need the gimmicks then go for the normal K70 and save some money. If you get the standard K70 you'll be able to get the Logitech G602 mouse which is outstanding. Another great mouse is...
I have looked all over the place and I've seen so many, I really don't know what to get. If you know any really good mice, then please share them with me. If you find a £60 mouse for £30, then share it with me too!