Re: Sig P220 Match
There is a SAO 220. I have owned a DA/SA 220 in the past. Reliable and accurate out of the box. Trigger is too long for me. Didn't fit as well as 1911. All I own is 1911 style pistols- because they fit me. If the 220 fits YOU better, go with a single action only 220. 1911 > 220 > HK if you plan to carry concealed.
Single action is by far the best for me. I will never buy another DA pistol. However, I think you need to train more with a single action. My thumb sits on the thumb safety when I am shooting. Out of the holster safety off happens reflexively. If you are in a panic and aren't practiced, I can see where you could be pulling the trigger with no results (safety still on).
Good luck. If you can afford a 220 match, I'm sure this won't be your last pistol.