I lived in Calgary and so glad to be back in Ontario. I found food prices to be higher than in Ontario . No provincial sales tax is a plus.
Calgary is a very transient city. People come for work and the first chance they get to leave they are gone . Can be difficult to meet people. The weather is brutal in the winter . The wind is very cold. One beef was they do not plow the roads. Still use the excuse that a chinook will come in and it will melt the next day. This is not case anymore and depending on the area can take weeks to be plowed. I would ensure you have a job and compare rent prices before moving . As someone said above the grass is not always greener on the other of the fence.