I see that Straight Talk is similar to Tracfone, but they're a US system. So I don't even know if it will work in Canada, or if it does, the roaming charges would be quite high.
The data is up to 3GB full speed and then 64kbps after, which is hilariously slow. Sure, it's "unlimited", but you might as well use regular gas, cheap tires, and put an RPM limiter on your Ferrari while you're at it. Poor thing will suffer. It's like Wind.
Also, to answer your question: no, Koodo has already stated multiple times that they will not do unlimited data.