Yeah, I'd stay away from Lockridge or Balga/Westminster. Most suburbs have their good and bad, just need to try to pick the area of each suburb. I've heard lots of bad problems about Armadale, but lived there for 6 months and didn't have a single problem, only moved because I was working in Joondalup. Caught the train to and from work for about half of that time while I didn't have a license and didn't have a single problem. Have heard dodgy things about Bassendean too, but at least the street I live on is quiet, except for the occasional douchebag deciding they need to floor it out of the slow point outside my house.