Hi, I'm in Calgary and the Emercor 6.5" polyurethane SIPs for my main floor are going up right now. See the link below for photos.
Emercor seems pretty good so far. They weren't very responsive to my customer inquiries initially, but they had previously worked closely with
my selected builder which meant a lot to me. The SIPs were designed for my house plan and delivered on time.
Insulspan in Calgary also does OSB SIPs.
TitanWall also does SIPs. There is at least one other manufacturer in Calgary. I don't have their name, but they do Magnesium SIPs. Look for posts on this forum from 'sgo70' (username) who is building with them right now.
(Edit: Just saw you're not from Western Canada. So you probably don't care about other manufacturers here. I'll leave the last paragraph in for others in case it's useful.)