Twas en route to be issued me a long long time ago (few years lol) I shot it a lot. Got really good with it. Took me a little bit. Awesome, all I wanted and had.
Then I moved to .45 and 9mm and I don't have to even try to be adequate with those two.
So I only have 2 .40's left. Sold the rest. I still have my blue labeled buddies. The Hk USP 40 and Glock 22
Bought my friends blue label Glock 17 a little while ago.
So...40's? YMMV depends how much you want it.
edit: the muzzle rise of the .40 and the string of bullets I get from it in a group isn't as tight as with 9mm or .45
It WAS as good with a lot of practice. A quarter of that practice, I did the same and better with the 9mm and .45