My three:
Wilson Combat CQB Elite .45 ACP (my Springfield TRP will have to do for now)
My Wilson Combat CQB Compact .45 ACP finished in NP3 (I LOVE this gun and it's my EDC)
Sig Sauer P239 DAK 9mm.
I'm familiar with the 1911 platform and as far as I'm concerned, Wilson Combat puts together the best 1911 that's balanced for tight fit, accuracy, and flat out reliability with what is among the best after sales service that I've come across. My Springfield TRP gives my Wilson a run for the money in a lot of ways though, including after sales service. I went with the Sig Sauer P239 DAK because i really love the Sig Sauer P series because they're easy to use, they're accurate, and they just work (I just acquired a new P226R over the weekend and intend to start putting it through its paces this week).
I'm sure that the above identified three pistols would be more than adequate in the event that I could only have three handguns, but since I'm not limited to three, I'll happily continue hoarding various firearms.