I have no negative comment about MFC, but I sure was impressed with Harv's Air during a recent visit, and subsequently read a write up on Harv's Air which left me even mor eimpressed.
I'd do some research into the prevailing weather in the place of your choosing. Both areas can have undesirable weather, though I'd much rather work around that common to central Manitoba, than New Brunswick.
You also have the potential for some float flying up the road from St. Andrews, in Selkirk. Good luck...