I have the Seecamp 32 (original), Keltec, NAA, and Beretta. When it comes to quality of make the Seecamp and Beretta are the top end, but the features and utility of all of these fit differently into what a person might want.
For absolute discretion the Seecamp works great for me. In a pocket holster it is there if needed and virtually undetectable in non-permissive environments (but only where legal). With the heel mag release the mag is not getting dropped accidentally, and it works just fine with available and relatively cheap PMC JHP. This is a kind of special event pistol when nothing else will do, and when elegant matters.
For a lighter but slightly larger choice, but at lower quality, the Kel-tec with euro FMJ works well, is flatter and lighter than the Seecamp. I like it and when I need thin and light its does fine.
I don't recommend the NAA 32 because it is very harsh to shoot, has broken parts and springs from what might be considered excessive round count by me, and in general it is kind of a cruder, larger, heavier knock off of the seecamp. But I did buy it first and enjoyed shooting it while trying to ensure it was reliable. It's cool as far as it goes but I don't carry it, and in retrospect probably should not have bought it back in the day.
The Beretta is nifty, but a design that is larger and limited in what rounds you can use without fear of damaging the pistol. Others have said it was scaled up from the 22lr design to 32 acp and its too much for it. I tend to agree, but it's still iconic and I like my skinny original tomcat with it's inevitable cracked frame. Still works, don't carry it.