This is diversity
If I had a Glock 19, we would be trading. Both of us would come away happy. I have a Glock 21 (.45acp) it's ok. I really enjoy my 1911 much more, and choose to shoot single-stack in IDPA so I can shoot it more.
But diversity in all things, if a Glock 19 fits you, you shoot it well, and it's what you want, by all means, get it and shoot it. If it's really the 9mm round you like, I would shoot several guns chambered in 9mm before deciding which one to purchase. I think there are some interesting choices, the XD, the 92Fs, and the Hi-Power are all guns I would consider comparing with the Glock.
Let us know what you decide, I would be curious about your purchase and the reasons that tip you one way or another.