Well, I know I already answered earlier in the trifold thread but figured I'd go into more detail since you started a thread specifically on the subject.
In short, I will likely carry my Sig P220 initially. I'm a big Sig and Beretta fan. I have a Beretta 92FS but, as sweet as that pistol is, I honestly think that's too darn heavy for every day carry. I did have a Sig P250. I bought it around 3 years ago (I think) but ended up selling it in 2013 when OC didn't pass back then. I had bought it specifically for OC and kind of took it out on the pistol by selling it in disgust (not disgust at the gun but disgust in the legislature). Kind of wish I had kept it as it was a great DA only weapon--though it was a little "fat".
So, the only issue with the P220 is that mine is old--like 1987 old. Though it's never failed me, I'm kind of tempted to get a newer one (with accessory rail, even though I don't use them).
But then I'm thinking rather than spending $$$ on yet another P220, why not look into something else. I like 1911's (classic style, great looks) but don't like the far reach slide releases. I'm not a Glock fan personally (triggers feel spongy and they're not aesthetically pleasing to me). Other options may be Springfield XD series, S&W M&P series, or similar.
Honestly, the reason I'm blabbing all this out is because I can't decide.
I've had a bunch of .380's but sold them all, mainly because at one point ammo was scarcer than rocking horse poop. Whatever I'm going to get is going to have to be a .45 or 9mm. I also like narrow frame designs. Any suggestions are welcome.