A 19 is a 17 like 1/2-3-4” shorter in length and height. Same widthThat's funny. The 19 is one of the few 9mm Glocks I don't own. I just don't like the feel of it in my hands.
The 43X, (and the 48), fill in nicely between the narrow single stack 43 and the "chunky" feel of the 19 grip.
And for range guns, (or open or knapsack carry), I've got 17's, 34's and a 31 with a conversion barrel.