Loved my 40's, but got rid of them to trim my caliber line-up a couple years ago (consolidated to one caliber for wife/kids/wallet/etc.). I shot 40 naturally better than 9 and 45. Could never explain that one. Slightly slower on my double/multi shot drills, but just as - if not more - accurate than my 9's. Just meant I needed to practice more with my current line-up.
This is the same for me. Last year I even checked my theory. I shot G 19 and G 23, 40 and 9 mm side-by-side all afternoon. Trying to see if I really would favor the nine better. I did not and was more accurate consistently with the 40. I like the bigger hole as well. And I keep thinking, if the new bullet technology is so awesome, wouldn’t that apply to the 40 as well? Making it even more effective? 40s can be found and had for a little less money. And I find bullets inexpensive as well.