Most people think that there are only two internet options in most areas, usually something along the lines of "Rogers or Bell", but that's rarely true.

Two other, often far better options, available in all and some of KW respectively are:

Teksavvy
If you have internet access available through Bell, you'll have access to Teksavvy. For $32/month, they'll give you 300gb of data transfer, usually at the same speeds, and I think they only charge for overages if you use more than 600gb over the last two billing cycles before having to pay any (rather reasonable) overages.
You will have to buy your own modem and router, but they're quite cheap if you know where to buy. Teksavvy has them for sale too, but it's cheaper if you know where to seek them from a computer store, ebay, craigslist or kijiji.

Eyesurf
This is another DSL type service, but they use no Bell computers/routers/ports/DSLAMs whatsoever. This company actually installs its own equipment in Bell offices. The only part of Bell that your connection touches is that piece of copper that goes to your local Bell office. This means that Bell couldn't even count your bits if they wanted to. They've also managed to be able to sell not only unlimited and unthrottled connections, but also faster than Bell, as fast as 15mbit/s compared to Bell's 5mbit/s service.
There are three downsides to the Eyesurf service:

1. It can be a bit more expensive than Teksavvy, especially if you're planning on going Dry-Loop. But still competitive for a truly unlimited connection that blows Rogers+Bell out of the water
2. Whether you can even get a connection or not is highly dependent upon how far you are from that actual Bell office. Teksavvy can work off Bell's "remote" boxes that Bell uses for people too far away, but Eyesurf does not have access to these. You'll need to be within 2 or 3 kilometres of either Water street in Kitchener or University and Albert in Waterloo.
3. As with Teksavvy, it's cheaper to provide your own DSL modem and router, but you'll need to be sure to get an ADSL2+ modem, which aren't much more expensive, but could require more hunting around. Canada Computers, just south of University on Weber Street currently has compatible modems for just $27, and tons of routers starting at just $25 (but just ask around, many people have extra routers lying around). Just go there and ask for help picking one out (but avoid anything made by D-Link, get it, de-link?)

Want To Save More Money?

Now that you don't have to worry about counting gigabytes (which cost less than a penny to provide, and that's only during peak times by the way), consider putting your router on a window sill and splitting the bill with your neighbour if they're a light internet user. Eyesurf is unlimited, so you won't have to worry about overages, and you'd have to be a VERY heavy user to go over with Teksavvy.

Don't forget, you may be on a contract with your existing provider, and even if you are month to month, Bell does require 30 days notice for cancelling, which is ridiculous given that they just flip a switch to inactivate your account and can unhook  your physical connection once they need it for someone else, or might do another truck roll just to reconnect you when you switch to Teksavvy. Rogers may have the same kind of cancellation charge too.