Pete, first of all=WELCOME to the forum..
You are right on what you see most...
The S&W 'K' Frame are the most popular out there==I would say the S&W Model 10 in the .38Spl. is the King of S&W's production over the years.
For your first revolver purchase, it would be hard to beat a S&W Model 19, in a 4" barrel for the best overall use==.38Spl. and .357 Magnum.
After revolver purchase, you would be wise to learn how to reload ammo to keep your 'K' Frame running...Bill.