For the last year or so I've been carrying a CZ Rami in .40. Ammo is HST 180gr.
I've been thinking about switching back to 9mm since I shoot it better. I'm okay with the .40, but the 9 is a breeze to shoot well.
Before the Rami I carried a Ruger LC9, but that ultra narrow grip really does a number on the web of my hand. Even with the Hogue grip sleeve added it literally hurts to shoot, so I rarely even take it to the range now. Guess I should trade it off or something, but they are so cheap now that I may as well hold on to it.
If I do decide to go back to 9mm I will carry the Rami's twin in 9 with 147 gr. HST.