I haven't really changed it much.
My carry gun selection's always been the same three weapons.
HK USP Tactical .45
East German Makarov
Kel-Tec PF-9
Until very recently when I sold the PF-9 (personal friend wanted a handgun for defense before I left El Paso, and offered me a fair price.)
I generally carry as much as I can get away with, in terms of concealability and comfort. I've carried all 3 at once, with spare mags for each. In fact in the first episode of my webshow, I remove all three of them from the holsters I normally carry them in (OWB belt holster, 5.11 vest holster, cargo pocket holster).
I've also been known to carry only the PF-9 without a single spare mag, during the El Pasoan summers.
Since moving to Alaska I've been regularly carrying the USP with two spare mags, without a backup gun, but that's also because I haven't gotten around to getting 9mm Mak ammo yet.