"Best" is relative to cost. You could get yourself a 100% unfiltered/unmonitored dedicated fibre business line. This would be the best, but would be likely to cost tens of thousands a month.
What are you looking for in a broadband provider? Is cost important?
If you like chatting with Indians three times a week over technical issues (like 250kbps line speed), Tiscali could be "best". No idea if they offer services in Canada but then this wasn't a serious suggestion anyway.
Im losing connection a lot now and people keep telling me its Bell and that they "suck". So im searching for what my best deal is and something that will not lose connection a lot.