The SR40 is my primary carry gun.
Having put more than 1,500 rounds down range through my SR40, I can say that I am impressed with the the entire gun. Some may not like the safety features, but I like them and quickly learned to adapt them into daily life. Its also a bonus for those with families/children (yes it should be locked away as we all know).
Stripping down the gun for cleaning is very easy, once you have done it once, you are likely to be able to do it blindfolded.
As for ammo my gun likes, I have shot everything from federal range + target ammo, CCI blazers (both brass and aluminum casings), CCI Independence, Magtech, Winchester and Hornaday Critical Defense ammo down range with my gun.
I can say that by far the best results were with the Hornaday ammo, followed by the CCI blazers. The only time I had a problem with FTF and FTE was with the Winchester ammo. Initially I thought it was just the box/run I had, but I tried again a couple months later with a different box/run and still had a FTE and FTF and also not as good consistency as the other ammo named above.
My sole complaint, but its more of a nit-picky issue that I have (and find this on 95% of the factory guns) is that the trigger is not as smooth as I like, so a trigger job to lower the pull pounds required and also to make the pull more fluid certainly made the gun more to my liking. I have not yet rated an under $1,500 gun a 5 star, so do take that into consideration when weighing my review.