I do like the fact that the maps are vector based, with means they scale up without pixelating.  I also like knowing the flowage direction, but I'd like a way to turn it off ... it is a bit of unnecessary clutter one you know which way the water is moving.

If you plan to use these maps for navigating, I'd do a thorough check with another set of maps.  Just for grins I looked at an area of Quetico where I plan to be traveling soon and noticed that the portage from Brent to William is missing from the Canadian maps. 

dd