what is better to do cr1 or k1 and then AOS

[Penguin_ie 5,994]

You can re-apply for a second CR-1 rather than fight the denial if you wish. It is often faster and cheaper than fighting the denial.

[Ighaepero 2]

Oh, boy. There is so much I don't know. Thank you, Penguin.

[ValerieA 350]

OP, I'm still not clear on where in Canada your fiance is. If you are in the West, look seriously at the K-1 option, since Vancouver has traditionally been MUCH faster than Montreal. Also, for expenses, take into account it is usually cheaper to fly from any city in Western Canada to Vancouver than it is to Montreal.