I don't have either. I like both. I wanted something smaller so that is what I got. What I would say is that I would not want a 40 in anything smaller than a compact. I have a P2000 sk... HKs only subcompact.... which by everyone else's standards is a compact. It's in 40. And that's about as small as I would go. And that is soft shooting for a 40 by many.
And I don't have a problem with 40. But when you get to true subcompacts.... PPS, XDs, Shield, Kahr PM/CM... I personally don't see the point of less capacity with more recoil in a tiny gun with a short barrel. 9mm is very acceptable and gives great performance for a mini pistol. Seriously, the choices we have today in 9mm "pocket" pistols is truly awesome. No more need for a PPK .380
I know all that is personal preference and you didn't ask. I like 45 (favorite) and 40... but now that I have 9... ya, I get it. Plenty don't care. And plenty like XDs in 45. When they announced the XDs in 45, it was a "must have" for me.... then I came to my senses. YMMV
And I don't have a problem with 40. But when you get to true subcompacts.... PPS, XDs, Shield, Kahr PM/CM... I personally don't see the point of less capacity with more recoil in a tiny gun with a short barrel. 9mm is very acceptable and gives great performance for a mini pistol. Seriously, the choices we have today in 9mm "pocket" pistols is truly awesome. No more need for a PPK .380
I know all that is personal preference and you didn't ask. I like 45 (favorite) and 40... but now that I have 9... ya, I get it. Plenty don't care. And plenty like XDs in 45. When they announced the XDs in 45, it was a "must have" for me.... then I came to my senses. YMMV