Being an eastern stater and not knowing the stigma I basically invested in those two suburbs also. Also, nearby, I sold my Eden Hill property and was going to buy back in but market has gone nuts - up about $80,000 in 8 months. :(
I saw Perth crime suburb statistics conducted by Rac regarding insurance claims recently although I can't find any link. That would help you if you could find it. The only one I could find was 2009.