I've been known to be there a couple times.
The "harder to conceal" thing exists on a continuum. All guns are hard to conceal. Anyone who says otherwise does not carry enough. I'm talking about taking the decision to carry 24/7/365, because having a gun on you is better than not having a gun on you, and you do not know when you are going to need it.
To solve this problem I have several guns, depending upon my needs.
For hunting, where concealment is not an issue, but terminal performance is, I carry a large frame .357 mag or .44 mag. When I worry about concealment I use shorter barrel versions of those.
For most of my carry needs, when I am able to wear what I want in clothing, and am not under too close of scrutiny, I carry a Glock 26 9mm.
When clothing is reduced to just a t shirt and I am in a situation under a lot of scrutiny and jossling with people, I carry a S&W 642 snubbie .38 revolver.
When clothing is very reduced/limited or the situation has special circumstances, I carry a Ruger LCP .380.
I also have a Glock 43 9mm, but that is in my wife's carry rotation, and I still go old fashioned with the snubbie revolver for that size gun.
Before the mag law changes, I used to occassionally carry a Glock 17, and many years before that my choices were primararily between a Beretta 92 and Walther PPK. When I got a Glock 26, the Beretta and PPK were taken out of the carry rotation. The issue was mainly going from DA/SA safety/decocker to the striker fire Glock 26. Now all my carry guns are draw and shoot, no external safety. While the snubbie revolver and LCP are not Glocks, the draw and shoot works just as well with them.
So not only do you have to think about mag size, you have think about the kind of manual of arms you want. And you should realistically think about the need to have more than one carry gun.
If someone is leaning toward having just one carry gun, and liked the Glock format, the answer is typically going to be to choose between the 19, 26, and 43. Determine how much concealment you need, and see which grip fits you better. As you go down in size, the recoil goes up, and the shorter sight radius makes quick accuracy more difficult.
The Glock 26 is a great starting point, but then there are two complaints people have. They think it is too thick. And they think the grip is too short. Some alter the grip with a pinky extension on the mag. Some go down to a 43 for a thinner gun, but lower capacity. Some go up to a 19 for a fuller grip (and in most states a higher mag capacity).
With the mag capacity issue in NYS, some go to a larger caliber. But for me, the stock Glock 26 is the best carry gun. It is what I would start with, if you are comfortable with the grip. On all 3 of my main carry guns, the 26, 642, and LCP, they all have short grips and I curl my pinky under. Modifying the grip to make it longer increases the chances of printing. Getting a bigger gun increases the chances of printing. Going up in caliber increases recoil, and reduces mag capacity or increases the size of the gun.
There is no free lunch. All guns have pluses and minuses. The thing the Glock 26 has going for it is from the start it was designed around a 10 round government imposed magazine limit