wondering* :P
I'm from Manchester uni, and the most important factor that you have to consider imo, is the type of campus you want to be living in.
Manchester is a city campus. When they say that everything is scattered [lecture theatres, subject-specific buildings, library and accommodation campuses], they aren't lying. Manchester is a university but there are almost no boundaries, and it's basically in the city/very easy to go in the city. Manchester is also very well known for being the cheapest student city as well; lots of young people everywhere.
While choosing my unis, I took a look at Exeter, often praised for the greenery and how beautiful the campus is. Well expect no greenery from Manchester, but we do have the best 24/7 Alan Gilbert Learning Commons in UK, and a very good library too.
Which subject will you be studying?