RE: HAMILTON, BARRIE, OTT
I think it depends on how old you are and what industry you currently work in.
If you're young and looking for a temporary job with low skill requirements I'd say stick to the larger places - Hamilton and Ottawa from your list and Kingston, Kitchener, London, Windsor - University towns, lots of part time restaurant work that's easy and can make you enough to get by. If your an old dog like me and already have work experience. I'd say find a job first and move where it is. Lot's of on-line services workopolis, monster - I've never picked up a job through these sites but they claim to be successful.