If you are buying a new pistol it is a non issue in my mind.
The Colt Series 80 mechanical firing pin block based off the trigger and introduced by Colt in 1983 is probably used by more other manufacturers than alternatives (Para, Remington, Taurus and others). Kimber uses a variation of the Swartz design that was developed at Colt and used by them before WWII based off the grip safety. S&W used to use and maybe still uses one based off the grip safety and not the trigger like the Series 80. S&W E Series pistols no longer use this.
Look at the bottom of a Glock slide and you will see a little plunger. As I understand it that is a mechanical firing pin block based off the trigger.
All Colt Series 90 pistols use the Series 80 mechanical firing pin block based off the trigger. Series 90 was introduced with the Colt Double Eagle DA pistols. One example below.
Colt continued to call some models Series 90 pistols such as the Colt Defender which is a SA pistol. Still Series 80.
If you read enough threads on enough forums you will find people that prefer the Series 80 system on a carry 1911.