Over the years, I've owned just about every handgun I could get my hands on.
I went through my S&W DAO 3rd Gen stage, but I don't use just them anymore, and the only one I carry at all is my 3953. It's a good warm weather carry gun since it's so slim, and it disappears under just a tank top when using a Bianchi Model 100 IWB holster. S&W TDA's have the nicest DA triggers out of anything I've tried, but I just don't like the transition from DA to SA, so I stuck with their 3rd Gen DAO's when I shot them.
I went through some Sigs, but I simply hate their factory DA triggers. I like their DAK's, but unless you send your Sig off to Bruce Gray at Gray Guns for an action job, their triggers are some of the worst on the market, IMO.
Rugers? Well, they do work and are adequately accurate, but they are big and clunky. You could do worse, but you can also do a lot better.
Then there's the SA XD. Since I live in MA, we can't have them, but I did get to shoot an XD .45 owned by a student at a Bruce Gray class. Nice gun, and I was very impressed. I'd probably buy an XD .45 if I could here, but that's not going to ever happen due to MA laws.
How about the Berettas. I have a 96 and I love it. It has probably the 2nd best DA trigger pull, behind S&W 3rd Gen autos, and their SA pull breaks cleanly. I only have a full size, so anything but cold weather CCW is out of the question, but a compact version could change my mind. They are good guns.
CZ's? I just got lucky enough to find a CZ75B .40 2-tone for sale here in MA and I snagged it at light speed. It's one of the most ergonomic pistols I've ever felt before and the accuracy is outstanding. I don't concern myself with the DA trigger pull since cocked and locked is the only way to carry it anyway. There is a little creep and overtravel in the trigger, but Karl Sokol at
Chestnut Mountain Sports is taking care of that for me. It could be my next favorite pistol after the trigger job and I spend some time with it.
Sigmas? They are accurate, reliable, affordable and ergonomic pistols with a trigger you can either shoot or can't. Most people complain about the trigger, but I've never had a problem with it. But, if CCW use is your primary concern, it's just that much larger than a Glock 19/23/32 that it's just a little harder and less comfortable to conceal. And, the selection of quality holsters for it are much smaller than a Glock.
So, now on to the Glocks. I've tried very had to dislike Glocks, and I resisted for many years. But, although I think Glocks are ugly and definately have a few things I would change about them, they are good guns. They are accurate, extremely reliable, affordable (especially when it comes to mags, you can buy boxes of them and still have money left over for ammo to fill them), and extremely simple to work on. All you need is a punch to completely disassemble everything except for the sights! Don't like the trigger pull? Lighten it or add weight to it for less than $20 using only, you guessed it, a punch. Want to detail strip it for a complete cleaning? No problem, as long as you have, yup, a punch.
Yes, you will find the grip angle difficult at first since you've shot 1911's for so long, but don't give up that easily. I know I adapted to the grip angle quickly, and actually found that it's very accurate. You do have to break your wrist downward a little to point it, but I've found it locks your arm right where it has to be for a solid grip.
Like I said, I tried to resist the pull of the Glock, but I couldn't. Now, I have 10 Glocks in 9mm, .40, 10mm and .45acp. What would I change about them? Their barrels. If you are planning to shoot nothing but factory ammo, then you don't have a problem. But, I cast all my own bullets and reload, which is a very bad combo with a factory Glock barrel due to their polygonal rifling and lack of chamber support. The solution? A $99 Lone Wolf barrel solves my problem. I have one that will fit all of my Glocks.
For standard CCW use, I usually use the G23. I find it to be a good compromise between power, being a .40, and size. It's not too small to accurately shoot, but it's not too large to make it difficult to conceal, either. When it's just a little to large, I toss my subcompact G27 on my side instead, but the 2 spare mags I carry are the same ones I carry for the G23, full-size G22 15-round mags. Sure, they stick out the bottom a little, but if I already went through the magazine loaded in my carry gun, I want all the rounds I can possibly load at one time. For range use, I usually use one of my G17's, usually an old Gen 1 G17. I find it to be more comfortable with its even texturing compared to my Gen 2 and Gen 3 G17's. I used my old Gen 1 G17 with a set of Hi-Viz fiber optic sights for a Practical Fundamentals steel/IPSC type class with Bruce Gray this past April and it worked out extremely well. To my surprise, I was the only Glock shooter there.
Someone mentioned the BHP. I have one, and it is a good gun, but unless you send it off to a reputable gunsmith, again, like Karl Sokol, the trigger leaves a LOT to be desired. Another problem I have with my BHP is that my hands are huge, and the damn thing bite me. I don't know about you, but bleeding after a few mags kind of ruins my shooting day. After Karl finished my CZ, I'm sending the BHP to him for an action job and the addition of a beavertail, too.
I hope this very opinionated, long-winded response helps a little.