I've been looking at these three cards, they are all similar price of £240 and I was wondering which one will be the best for most games. I am also open to other suggestions but British sites only please. Specs: i5 3470 4GHz, 750w EVGA PSU, 8GB RAM.
Get the asus. the 770 is overall a slightly faster GPU and the asus cooler is one of the best on the market. With mantle coming out the 280x might have a significant advantage on some games, but this feature won't be implemented on an appreciable number of games for years.