There is only one real option: Rogers. (Yes, yes, yes, I know Fido is out there too, but they're owned by Rogers, ergo, ...).
I signed up for the $65 gig plan - I figure I'll try it for a few months and see how my usage ends up before downgrading if it's overkill. So far, I've used about 150 megs in around 2-3 weeks, so it may be worth it for me.
If you ask nicely and make a sincere request, you can usually get some kind of a discount for signing up for a longer term with them for an extra few bucks off.