Which middle range GPU should I buy?

the 7850 1GB is a great lower cost card, but even with a MIR you are still looking at $165. http://www.newegg.com/Product/Product.aspx?Item=N82E168...

If that is too much for your budget (which would be great for you to mention), then look at the 7770 ($130 or $110 after MIR) http://www.newegg.com/Product/Product.aspx?Item=N82E168...

The Nvidia GTX 650 Ti splits the difference between these two at about $140 (120 after MIR), but the 7850 1gb is significantly better and the 7770 isn't that much slower. But this might give you an in between option. http://www.newegg.com/Product/Product.aspx?Item=N82E168...

I dont know your budget but here goes:

SAPPHIRE Radeon HD 7770 GHz Edition OC 1GB 128-bit GDDR5 $139
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

SAPPHIRE Vapor-X 100358VXL Radeon HD 7770 GHz Edition 1GB 128-bit GDDR5 $134
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

SAPPHIRE Radeon HD 7750 1GB 128-bit GDDR5 $109
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

My budget would be under £100, which I reckon would be less $140 (because we get taxed out the ass in Britain).

There's plenty of 7770 at that price :

http://www.scan.co.uk/products/1gb-gigabyte-radeon-hd-7...

http://www.overclockers.co.uk/showproduct.php?prodid=GX...

http://www.scan.co.uk/products/1gb-xfx-radeon-hd-7770-d...


Just make sure that you have a decent psu with ~450w with a 6-pin pcie connector.

+1 to that MSI at overclockers. Great price on a Ghz edition 7770. Go with that considering your budget and the strength of the 7770 in this price range.