Of the 9mm's I've owned I liked my Sig P239 but thats $$$ and arguably a little heavy. I also understand that Sig's QC has somewhat...declined. Still good but not quite as worth the increased bucks currently. That said it's a great size, accurate, and reliable.
I also REALLY like my S&W M&P and it's my usually recommendation to the "what 9mm?" question. Reasonable price, good capacity, very reliable, and very accurate. I've owned two now, a 40 which I traded and the current one in 9mm. The above goes for both of them. I also really like the interchangeable backstraps that make it fit just about anyone like a glove. I've not handled the compact version, but I understand the above holds true for them as well and for carry might be worth looking into.
But all that said, if the G19 works it works. I'd prefer the M&P personally, but that's just me.
