Never adjusted the sights on ANY revolver, and I've owned 19's, 66's, and now a 67-1 (stainless version of the Model 15) I gotta admit I like the bull barrel on the fixed sighted K frames better than the tapered one.
But I just got a Bud's 10-8 just last week. Fit the description. 70-80% blueing remaining. No rust or pitting and gun is smooth. But the finish wear is bugging me, and I predict sending it to S&W for a refinish within 6 months. I know the wear adds character, but I just like nice looking guns.
So my 67-1 is still my favorite. Looks almost new and just so pretty. At 15 yards, a saucer sized target is shredded. Good enough for me.
So for me, I would get the 15 if you can see a pic and if it's in better shape than a Bud's 10.