-Poker size for games with up to three hole cards, either self-dealt or not, or with an automatic shuffler (so I 'm told, about the latter)
-Bridge size for games with four or more hole cards (or, just don't play those games
)
-Jumbo index for larger tables or anyway, for people over 40-45 years of age, regardless of them having ambassadorial status or not (Presbys, as in presbyopia, is the Greek for both old man (NOT OMC) AND Ambassador.
-4-index Jumbo even more so as above, especially if left-handers are included (especially impeded left-handers, forcefully taught to use their right hand to write during the Middle Ages).
-4-color, 4-index Jumbo, provided the blue is light enough to not be confused with black, for beginners and mentally impeded people (including myself
)
Apparently, I voted for poker-size.