Courier Choice DHL, Fedex, Post, Purolator, Courier

myversa

If you have to send a very important document within Canada or to other countries,  

Which one would you choose?  
Any bad experience with any of those services?

DHL, Fedex, Canada Post, Purolator or UPS

There is no multiple choice this time in case there might be other courier services I did not think of.

myversa

I used Canada Post to send mail to my wife in Malaysia before and the whole package just got lost.  They did not even know where it went.  This actually happened twice.