I was in the same boat a few years ago. I love S&W triggers. But I had to go with the brute strength and reliability of the Redhawk.
I bought it mostly as a fun gun at first. But it's a four inch Redhawk. I carry it hunting all the time now in a Simply Rugged holster.
I have seen N-frames rattle loose, even the model 27's. I've never heard of a a Redhawk shooting loose. The Redhawk cylinder is quite long so those 320+ grain loads fit fine.
The Redhawk trigger can be vastly improved with Wolfe springs. A little polishing and new springs does wonders to both DA and SA trigger pulls.