Just purchased one of the 9mm today because I wanted something thinner than the Glock 19 I have now.
On a scale of 1-10, I'd consider my experience level about a 4 or 5, so that can be taken for what it's worth.
(The Glock was the first handgun I ever owned.)
I obviously like its size. It fits my hand better. Pretty steep on price, but this is a solid, well-made handgun for its size.
I went through a couple of rounds on the range at 21 feet. I was using cheap ammo, and not used to single action. The trigger movement is lighter and has shorter travel, which I'm hoping explains some of my shots being about 4" higher and more to the left than I expected.
All in all, I'm happy with this purchase. I had been wanting a 1911 type handgun for a couple of years, so finding a smaller sized one was what sold me.