EMP in 40
I created an account just to answer your concern.
I have the 9 and 40 EMP flavors. ALmost bought a comparable STI model, but these held one round more in each caliber and side-by-side, seemed to be closer to my ideal EDC.
I'm moving to 9mm just to simplify, but of all the 40 I've ever shot, the EMP 40 is the finest recoil sponge I've ever used. 40's a little heavier than the 9, but the extra weight and balance seems to really offset recoil and nullify the 40 snappiness so follow on shots can be had very quickly and accurately.
Occasionally I have failure to go bang with Freedom Munitions. Out of a case, I may have two boxes with 4-5 each with this issue so it's not a real hassle. Same round will go bang in the Glock 23. I may have Springie send me a new firing pin. Don't have this issue with any other ammo, even Tula and other notoriously cheap stuff.
Hornaday Critical and Corbon DPX carry stuff is 100% reliable, about $100 of each down the barrel at random intervals to stay real. I have never had any feeding issues among 6 mags with any ammo.
Both are very convenient to carry.
Other than CTC laser grips, I've not been compelled to do much "improvement" besides a horsehide holster and some cool grip screws. It's really complete as-is. I just got annoyed grabbing the wrong mag or ammo at the range (or EDC mix ups) so I decided to cull the herd a bit and 40 pistols are going to be sold.