If you insist on mining, spend your 200 pounds getting the best GPU your system can handle and mine and alt then convert to BTC. Your GPU will depreciate far slower in value than whatever asic rig you buy (even s7's likely). Anyhoo, good luck with whatever you decide to do.
Yes it is right .....unless buy at least 3 x s7 then will be some ok ..and mine other coin other than btc then wait this coin to price up then sell ...
By thebway gpu is better
X11 can make one dash per day is 0.007 is better than 2000 GB miners with wasting electricity
If you buy 3 S7's you will be mining BTC there really is not a great sha alt coin. So I think this bit of info is pretty false.
Also GPU's are hard to ROI on I have not seen anyone talk about ROI in quite a while. So you might make a little money, but chances are you wont pay off the GPU and pay for electricity. Asics really control mining at this point.