I don't own any full-size 9's, preferring compact/subcompact for off-duty, and retirement, usage.
I own a couple of G26's, a 3913, CS9 & a SW999c (in the original AS mode, giving it DA & SA capability).
After having worked as a LE firearms instructor for more than 20 years, I don't shoot for "enjoyment". (Unless it's a Single Action revolver, perhaps, which provides some nostalgia in the form of remembering when I was growing up and first learning to shoot.
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For those occasional instances when I find myself choosing a 9mm pistol to use while working a range session, and I don't feel I'll need one of my .40's or .45's for instruction & demo purposes, I'll sometimes choose either my 3913 or my SW999c. Both are lightweight (although the 999c is obviously a bit lighter, having a "plastic" frame), and for those times when I feel like running slow-fire drills out at 50-75+ yds, the SA trigger on the 999c is outstanding.
Sure, I've run both of my G26's out to 100 yds for accuracy drills, and they're capable of doing the job. Good enough "tools" for their intended roles. I can make them work ... but their grip, ergos and triggers are ... not something that makes me go "hmmm".
I bought a M&P 40c instead of a 9c, but the 9c's I've used have all been better balanced and possessed of more comfortable ergonomics. Their triggers are also a bit lackluster, but certainly serviceable.
If I'm looking at it from an overall perspective, though ... meaning more than just a good quality "service" gun ... I simply like the grip angles, ergos and balance of the 3913 & 999c. I prefer the trigger pull & recovery characteristics of them to that of the G26's. Also, as good as the 3913's trigger pull is in both DA & SA modes, the 999c is noticeably better when it comes to smoothness and lightness.
My CS9 runs a close second to the 3rd gen S&W and the S&W/Walther.
Now, if I were going to be picking a full-size 9mm for range enjoyment & target shooting, it would be the 5906PC I borrowed from another instructor some years ago. The all-stainless steel frame gave it a great heft to mitigate the already-reduced recoil of the 9mm cartridge, and the accuracy was amazing. The PC trigger was amazing, and the tight tolerances of the PC gun, its Briley barrel bushing, made it seem amazingly easy to overlap holes on the targets. It handled and was even easier to shoot than an early 6906PC "training gun" I used off & on for many years.
