As I recall, 270 Crown has a 545 and likes it. Perhaps he'll chime in.
For me, Canadian detail is important, so the first thing I would check is what is built in. In evaluating a purchase, I'd need to know if any additional chart purchase would be necessary.
If that is a factor for you, I can share some chart images that make it easy to determine if the built charts of Canadian waters are full detail. (difficult to assess that without some specific frame of reference)