I bought one last June. It comes with the heavier spring installed.
It works fine with CCI mini-mags and Federal bulk. It hates remington bulk (golden) and absolutely hates winchester bulk. Hollow point seems to give the most trouble. I think the shape of the tip of the round causes it to hang up on the top of the chamber as it runs up the ramp. Atleast whenever I have a failure to feed, it is almost always hung high.
It is easy to clean, with only a few parts. Basically you end up with the slide, recoil spring and guide rod and the frame with barrel.
All that being said, I like it. It is not a target pistol, but is a good alternative to a full size semi-auto.
There is a lot of good help online.