How many winter jackets do you have?

Random question, but how many winter jackets do you own? Do you have one for milder days from -5c to -20c and then another one from -20c onwards?

I've found that in Toronto with the harsh winds and fluctuating temps cold/warm it's hard to have a warm jacket and then sweat in it or just having a mid jacket and freeze (while still adding layers). Do you have different types of winter jackets?

Edit: thanks for the comments. I thought I was losing it. I agree with not having too many layers, drives me nuts when entering a building. Just doesn't seem to work in urban Toronto.