1. Walther PPS M2 LE- With the extended magazine and pinky extension, this firearm is difficult to beat in overall ergonomics. It is extremely comfortable to shoot and recoil is more than manageable for this compact frame. The PPS is surprisingly accurate for its short action and sight picture. The Walther PPS M2 is a great concealed carry option.
2. Smith & Wesson M&P Shield 2.0 - The Shield has great overall ergonomics and controls. The recoil is manageable and it is easy to stay on target for follow up shots. The trigger is much improved over the 1.0 and it is simply a great shooting firearm. It is accurate, compact, and is also a great concealed carry option.
3. Glock 43X - The overall ergonomics of the 43X are great. The Glock grip angle is not for everyone, but I found it to be less of an issue with the 43X. The 43X is the snappier of these three firearms, in terms of recoil, but it is still extremely manageable. While still accurate, I would say it takes a little more effort to get the same level of accuracy compared to the Walther PPS M2 and M&P Shield 2.0. I would say, in my opinion, that the trigger is better in the 43x. There is less take up, and a shorter reset that is both audible and tactile.