For me I always enjoyed the 2005 season and would pick it as my favourite, that was until 2013 Big Brother was over so I thought, why not download one of the older big brother seasons back when it was on network ten, I started off with 2008 since it was the last one before 2012. Honestly after I watched 2008 I thought it was a great season, great housemates, entertaining, funny hosts. When I went back to watch the 2005 season it was also great but not as great as 2008. Which came to a surprise since I always knew 2005 as my most favourite season, but for some reason 2008 comes to a first, really enjoyed it.
I think 2008 is a bit of an under-rated series. It had some great characters like Bianca, Bridgette, and Nobbi.