While I haven't owned/seen all of the sets, in general President's Choice cards are fairly thick, yeah. I'd say about the size of most The Cup cards. 180pt would be my best technical guess on most Presiden't Choice cards, at least the ones I've personally held in my collection. So if you're looking to store them in toploaders/magnet holders, 180pt is fine for these cards.
Found this helpful image too:
