I have a M40A1. LOVE it. The trigger needed a fair bit of dryfiring to smooth out. I love the trapezoidal sights; I am faster and more accurate with them than any of my many other pistols.
I also find it does a great job of taming recoil on the .40. So much so that I sold my G22.
I had a L9. I was instantly disappointed when I found it did NOT come with the trapezoidal sights; it had Night Sights installed... I the end I sold it as I found my PPQ or Glock 17 were better options in 9mm.
A little hard to find parts, mags, accessories for, so I might encourage you to consider a Glock, PPQ or VP9 as alternatives.