IMHO there is no ONE flagship VIctorinox (I have 50 of them). I guess to your list I'd add the Pioneer, Farmer, Tinker (my home EDC), the Deluxe Tinker (my going out EDC), Mechanic, Craftsman, Cadet, Climber and the Compact. Pick which ever ones you like (they are cheap enough) and has the tools you use or think you would. Can't go wrong with a Vic SAK. I have a Classic SD but I find it too small to be useful for anything much more than cleaning your fingernails and maybe opening mail.
Rich