Are you looking to either rent or buy? Depending on where you are and your financial position, it might be better to just buy a place because the rent monies you pay could well translate into physical equity in your place i.e. something you own.
Areas in the GTA...hmm...I guess it depends on what you want in terms of conveniences, distance to work, cost of living, etc.
If you're buying, you can try mls.ca for starters.
