I had an S&W 3913 in mid-nineties. It was not pretty and didn’t feel as good in my hand as some others, but it was accurate as all get out and very,very reliable ( and one of the many,many guns i regret selling). Still CZ75 would be my pick if I could only have one.
Ruger Super Blackhawk 10-1/2" barrel "Silhouette" model. One of those guns I should've never traded off. Shot a lot of steel plates out at 100yds with it laying on my back with it resting on my calf (with a pad, naturally). Good times! Bought it new in the 80's when handgun silhouette shooting came on scene. Paid in the $300's for it. It'll cost you a grand today.