Ok, are those times based on peak hour or normal traffic, does trip planner allow for red lights..??
I find 59 mins very hard to believe seeing as I do Thomastown to Frankston in an hour in normal traffic
I dont know, but in normal traffic I reckon I would do it quicker on the ring road than you would your way..especially to King and Collins..peak hour could be a different matter though.
In your position I would go your way too , you save on tolls and freeway traffic is very unpredictable...