Thanks to all for the comments and recommendations. The choice is still a diverse one across the weight range.
Deacon,
Your comment was very helpful. I did not know that about revolvers. That will play a significant factor in the decision. Does your comment apply to 'the SAA sights' or mainly to double action revolvers.
Since, I changed both sights on the Rossi 44/40 Octagon Rifle I have, I will be changing the sight on this new Rifle, also. That way I can adjust/file it for the 158-grain bullet, I would possibly use. I would never file a fixed pistol sight.