I use a combination of riffle + bridge shuffles and overhand shuffles. My best friend can't shuffle, so be picked up a card shuffler, but he has difficulty using it because he somehow always manages to get his cards all sticky/sweaty. It's unfortunate, because he doesn't understand that you just don't draw your 3 golds in the same hand without +draw 3 shuffles in a row, multiple games out of a set
Every once in a while I have to enforce some mandatory runs through the shuffler.
FYI - a randomized shuffle is considered to be 7 non-perfect riffles.
Mashing cards together (unprofessional faro shuffle) is really damaging on thick cards like these. If you have a few expansions and are playing random kingdoms, normal riffle + bridge shuffles should last you thousands of games, assuming proper card storage and safe keeping from harms other than shuffling itself.
