I'm a big proponent of the KISS principle. I used to want one of everything, then I wanted similar MOA but in several different calibers. Now, I'm down to a plan to only get 3 basic models: Full-size handgun, compact handgun of the otherwise same model (both in 9mm), and .223 carbine. So I don't buy into the whole "it's your duty to own 9, 40, 45, .357 sig, .357 magnum, and at least one each of Glock, 1911, CZ, Sig, and Hi Power."
Get what works for you, get what you like the looks of (and if it turns out not to be fun to shoot, make it a range queen), get what lets you practice, and get what's fun to shoot. Personally, for me, similar MOA is what works for me, is fun, and I'm not too big on aesthetics.