I find that both are equally adept at collecting taxes. I haven't had any problems with package handling on both so I believe it is a matter of economics at this point. Off topic, are you related to the photographer???
Yes, the USPS hands the packge over to Canada post. I've sent packages via Fedex to Canada and to Asia and the only time charges were incurred was in Asia, but the charges were levied onto the recepient and not the sender.
i would say get them through fedex that is good they do not over charge now ups if it ground they add thier brokage which kills u if express they insist on paying gst and pst even if it is outside province or county sale so have fun thanks
My Bad any way UPS and USPS are bad in handling speakers ups wrecked one set and are yet to pay they told packing will have to withstand four drop on thier belts from one feet and if damaged not thier fault fedex and purolator in canada are gentler in handling them and they pay for what they break hope this helps