Most of the good ones are discontinued
In my experience, the best .32ACP as a range gun or house gun is the BERETTA 82 Cheetah pistol. I find it far and away the easiest to shoot and it has the usual BERETTA Cheetah advantages, smooth double action trigger, very good, easy to see sights and recoil so mild that when I fire, I can watch the front sight rise and fall back on target. It is also the most reliable .32ACP pistol that I have fired, feeding everything including the FEDERAL Hydra Shok.
The reason I like the 82, the single stack version that is equivalent to the .380ACP model 85 instead of the model 81 which is the same gun as the .380ACP caliber model 84 is the smaller circumference of the grip. They are about the same width, but the single stack models are not as chunky.
The negatives are the size of the gun. It is as big or bigger than some 9m.m. pistols.
I had a WALTHER PP and still have a PPK, so I can compare the WALTHER to the BERETTA. The grip on the WALTHER PP is squared off at the rear and I found it less pleasant to shoot long strings of 100 rounds of more than the smaller PPK which has a more rounded grip shape.
I never found anything to complain about the PP, except the grip frame, so I sold it and kept the more comfortable and compact PPK.
My WALTHER had a good trigger, but not as good as my pre-war PPK and nothing like the trigger on my BERETTA. The WALTHER also weighed about the same as the bulkier BERETTA.
If I were going to buy another PP, it would be the original. The WALTHER PP was a very well made gun. It is expensive, but as long as the grip does not bother you, it is certainly worth it.
I have not fired one, but if you find a SIG 230 in .32ACP, you should consider it. I have the 232 in .380ACP and it is my favorite .380ACP caliber pistol for the house, car or range.
I have shot the Chech CZ82 and would recommend it as well if you find a .32ACP model 83. The chech is the heaviest of the bunch and will have very little recoil, a 12 round magazine, good sights and trigger.
All of the above are double/single action pistols and can be used for self defense and concealed carry.
If you want only a range gun, then the old COLT 1903 is a great gun with a good grip, usable (but small sights) and fantastic quality. I disqualify it for self defense because of the single action trigger which I will not have on a self defense gun.
Mine is quite accurate, very reliable and will last forever as it is overbuilt for the .32ACP catridge. One huge negative are the clip. The original COLT are going up in price with many good ones running over $100.00 each.