Ditto.. I believe both Melton and Werribee are safe suburbs. They are better than Frankston and Craigieburn where civilians are attacked. The whole vicinity of Craigieburn and Frankston is dodgy..
Don't think only about distance from CBD and travel times, think about your safety also.
I tend to think Frankston dodgy is lower level than North/West dodgy. Not that I have walked the streets at Frankston at night time, but I guess I might be able to compare it to Dandenong at night which I would be fine with except I would feel dodgy walking at night but know my life wouldn't be in danger.
When I walked some suburbs in the West at night I feel like yes walking at night is high level dodgy, ie. will this person want to kill me....