I know this is debatable, but:
After getting use to the sigma, I shot everything else better. I believe it improved my skills.
In this day and age, people seem to hang their hat on light single action trigger pulls. If you read through thousands of posts, you'll see that many people rate a gun based on the trigger pull more than anything else. This is one
of the reasons that the sigma isn't an internet darling. The trigger design on the sigma actually makes it a very safe home defense gun. A negligent or accidental discharge is unlikely.
The sigma almost forces you to get back to basics and concentrate on technique. Once you get it down pat, the accuracy may surprise you.
We've put quite a few rounds through ours with no problems whatsoever.
It's been an Energizer Bunny from the get-go! Big bang for the buck!