As you'll simply be obtaining a Term Insurance policy for your surrogate (likely a Term 10 policy) the insurance company is next to irrelevant. Term Insurance is a disposable commodity and there is no "best" provider.
In my opinion, this is the conversation I think you should have with your insurance broker:
i) Request they obtain a "LifeGuide" quote which will provide you with all the rates for Term 10 ins for all companies in Canada. You'll note the top 5-10 companies will all be within cents to a couple of dollars in monthly premium. Pick the provider that is easiest to do business with. I imagine you would likely see names such "Empire Life", "Wawanesa", "Canada Life", "Equitable Life", "BMO" or "Industrial Alliance" etc in that top 10 list. Those are all fine options.
ii) Worth noting - if you GC has any health history that may make insuring her a bit of a challenge (unlikely as she's your GC)...the end of the year, in my opinion, is a marvellous time for that endeavour...the best client focused decisions tend to occur in the last quarter of the year. In my opinion, this is generally speaking where I would think you would have a preference to place that term insurance with BMO or Industrial Alliance as they generally seem to have the very best client focused decisions.
I wish to stress this is simply an OPINION and should absolutely not be construed as advice. Simply my personal experience and observations. Wishing you all the best!
It was long, awful & hard. We got very lucky and didn't run out of both emotional and financial resources. We saw some of the most beautiful of people in our lowest moments. Baby Girl arrived Apr 10/2018