I did Public Relations units at Berwick last year and had a lot of PC kids in my class (not sure if it's a compulsory area of study or not, but most definitely do it). The campus is very chill, far quieter than Clayton (they only admit like 400 students a year compared to the 6000 who got into Clayton this year) so campus culture is a little bit non-existent, but on the plus side the libraries are fairly quiet and you can get work done.
If you do Public Relations, it's pretty easy - but I loved it. Interesting case studies, class discussions etc. You will probably need the textbooks for it, as the exams are pretty much based off the weekly readings. The lecturer even did summary notes of her own lectures, which kind of negated the point in taking notes in the first place...