So here is the exercise. Pick one pistol set-up that will cover you for EDC (concealed), for field use in all weather, and to train with. Here is the wrinkle -- that same pistol set-up needs to be suitable for the same uses as your pistol for fifty of your friends, and you need to set all the pistols up. Extra credit if the pistols are likely to run reliably out of the box and as accessorized, and you don't need to get a home equity loan to pay for each one.
This idea came about because I have been shooting a pistol the last few days that fits these criteria perfectly, and was simple enough I could set up dozens of duplicates with a minimum of fuss.