Standard trigger with standard springs works fine. Great, in fact. There was a great article in a recent Field & Stream where they tested accuracy of two identical rifles, one with a good trigger and one with an "awful" trigger. Every single tester, including Petzal (Rifle Editor) shot the awful trigger rifle markedly better.
Here is a target I shot from 7 yards with my 442--10 rounds of Gold Dot 135+P (DAO, obviously.)
These guns are perfectly capable, right out of the box.
I say, buy the standard revolver, leave its internals alone, and spend all the surplus money on ammo and trigger time.