I go to Aston University, I'm in my first year and have lived in Birmingham also for a long time so I can definately say that, what Aston lacks in size of campus in makes up in a fantastic guild and endless events diary. The size of the uni doesn't necessarily mean, the bigger the greater the uni experience. I was also torn between Leeds and Aston for a business course, however, after visiting Leeds, I found Aston greater for nightlife, gigs, places to eat and go out and easier to integrate in quickly. Hope this helps!