Yep good old Canada Post, we actually get mail delivery here in this backwards country that's almost twice the size of the USA! Lol, sorry but the USPS is a story organisation at this point. I work in the mailing industry so I have first hand knowledge of the two postal service (I work for a private company that is forced to use both to provide our services) and Canada Post is far superior than the USPS in almost every metric available.
But I digress, I have tried the three nuns so that's going to the cellar, the other three blends I haven't tried. I'm thinking the OGS as recommended by Shutterbug, and if I like it that's a great tin to stock as it's so damn cheap compared to others.