I own and use both the P-32 and the 642. I feel a little better protected with the 642. This piece also looks a little more intimidating (the P-32 looks like a water gun). The 642 is about twice as heavy and much thicker. Even in loose dockers the 642's bulge is easily seen in the front pocket while seated. The P-32 hides extreemely well, no question. As for what I carry more often. Probably the P-32. It is way to easy to carry and spoils you quick. I am often dressed in work casual and rarely wear a jacket. The p-32 blends in completely unnoticed. When I go out with the family (walmart, grocery store, eating out, etc) I usually carry the 642. Plus, in this setting, even if someone notices, who cares, it's legal anyway. But, if I am in a setting where I know it would cause a big stink if someone made me, I will carry the P-32. Therefore, I love them both and will keep them both. If I were to buy just one I would get the 642. Ultimately it is more relaible, more versital and more powerful.