My advice would be concentrate on the course rather than where for now Liam. As someone said, student life pretty much the same in all cities anyway. You're going to have to sit through hours of lectures over the 3 years, so it'd want to have a syllabus you're interested in.
Be aware that Dublin is fookin expensive, but I have to say in my experience when I first moved over and my mates were still in college it has good student scene. (although probably best ask a current student, as half the old places are closed now :eek: )