Humminbird map chip for Thousand Islands and Ontario

What chips do I need for Thousand Islands out into Lake Ontario for my Humminbird units? Does the Northeast chip cover everything? What about the Canadian side?

Does not cover the Canadian side

Do you know what chip is best for the Canadian side? I think there is a Canada chip as well as the Navionics that would cover Canada. Not sure what is best. I would lean toward Navionics if they are on par with each other and I get more coverage with the Navionics. Have you used either or both of these chips?

I currently use Navionics when I cross over the boarder as I am being too cheep to buy lakemaster just for that and it works out just fine. I then can use the Avionics on the bodies of water that Lakemasters is not an HD map.

Thanks! Think I'll go that route as well.