Which Is Better For Colo/NOC/DC US Or Canada?

I have a web hosting business that has been growing constantly for a couple of years, now I think it's time to move on and instead of leasing servers start with colocation and operating my own hardware, I'm in Mexico and there are no good deals here as there are in other countries, so I have several questions about your appreciation of where things are better for business, US or Canada:

Where is colo cheaper?
Where is hardware cheaper?
Where is personnel less costly?
Where is personnel better qualified?
Where is office space cheaper?
Where is electrical energy cheaper?
Where are more investment opportunities?
Where are taxes lower?
Where is living less costly?

I've been researching these on my own but still have several doubts, may be you find some of this question obvious however I'd still like to know your appreciation.