I did not feel comfortable voting either of the two choices since my goal is not really to "diversify my collection to as many cartridges as I can".
I have 'consolidated' my handgun collection to the following cartridges: .22LR, .25 ACP, .32 ACP, 7.62x25mm, .380 ACP, 9x19mm Luger, .38 special, .357 magnum, 9x18mm Makarov, .40 S&W, .44 magnum, .45 ACP, and .45 Colt. I can reload all but the three smallest calibers at this time. With the literal baker's dozen choices, I can usually find some kind of factory handgun ammunition for sale, even in times of mostly bare shelves, although it may not always be what I particularly wanted at the time. Add in the .22 short, .22 long, and .44 special capabilities and I have sixteen different commonly available cartridges to choose from.
I like the diversity, and have always been able to find something to shoot. Whether it is a day at the range or for a SHTF scenario, having options is a good thing in my mind.
Of course, some folks, like my wife, think the number of firearms involved is a bit over the top, but I enjoy having to choose which three or four are going with me on any given range day. Mixing in the occasional .25 ACP, Tokarev, Makarov, or .44 magnum handgun is a hoot. Even if I am not looking to have as many cartridges as I can, for me, variety is the spice of life in my shooting hobby.