Far from being my favorite 9, but have to agree on the 19. It's just got so many things going for it that it's hard not to think of it in the top echelons of carry guns. Having said that...I'll most likely have my Shield and a spare mag or three with me most.
Now...all my opinions aside, MRSpivey has it right. Whatever works for you.
I have some Smith wheelies that I love. Some my Dad's, some I've acquired over the years.
As indicated, I have Glocks, Smiths, Walthers, CZs, and a few Sigs thrown in for good measure. Even a Tauri or 2. lol
My house gun(s) tend to be whatever I shoot easily enough that I can pick up and know what to do without fiddling around with buttons and levers. For me, that tends to be the G19 and a couple of Springfield SC9's.
I bought the first SC9 many moons ago and had a CT Grip put on. Old and still functional. I change the battery(thanks to CT's Lifetime Battery deal) every year. The second, I traded into from a member here. Both are in convenient locations for easy access, but well hidden from sight.
I'm not particularly great with any one of these, but I can use, fairly well I think, all of them.
But picking an absolute is an exercise in futility for me.
If I could keep only a few, I would probably have to go with Dad's K frame 38/357. Best all round gun I've ever shot.
Not the best carry for me, but it can be done.
Sorry, sort of wound up this morning.