The big difference between league football in England and Spain is that more teams compete here. In Spain, it is usually only two teams going for the title, which is not necessarily a bad thing because you get great matches between the two, but I think the English league is better for being more competitive.
I'm very happy to be at City, and I would like to continue there for as long as possible. It obviously depends on my health, my quality on the pitch, and if the club want me to stay. I would like to be there until the end, but the Premier League is such a hard league to play in. It is much more physical than somewhere like La Liga, so it depends.