One thing I have learned about big bore revos is that the grips are about the most important part of the package for good shooting. (Leastways for me.) Oh, the trigger is important, but if you are anticipating a beating, the best trigger won't smooth out a flinch. Also, a so-so trigger can be dealt with, but a grip that doesn't stay put, but slops about under recoil will perform poorly.
<Thinks about revolvers>
I think my best DA trigger is on my SW1917. SW did not neglect the finer points just because a war was going on. I had my SW686 trigger worked on and it is smooth, but I have yet to find grips that make me shoot it better than my SW1917 or my SW629-1. My 629 went from so-so groupings to making look like I knew what I was doing with a revolver when I got the right grips (stock skinnies + Tyler T-grip).
Frankly, I have not found ANY coil-springed mainspring revolver trigger worth writing home about. Some have managed to smooth out and/or get the engagement right-on, but the feel of the coil spring is just plain inferior to a leaf.