I love their revolvers but their centerfire autos earn a big meh.
I agree, and have never yet owned any Ruger semiautos other than their Mark series .22LR pistols, but I know some cops who love their centerfire Ruger semiautos for durability, reliability and accuracy. (Yeah, but they're so
clunky!)
I've had ten Rugers and still have eight (couldn't bear to endure the Mini-14 any longer and sold one bull barrel .22 Mark II decades ago in a trade), as well as nine Smiths, and I believe that I can reliably recognize that quality control has decreased with both companies' products over the years.
Arguments about the superiority of one companies' products over the other aside, when it comes to using their compact revolvers for CCW in .357 Magnum, the SP101 wins hands down over the J-frames IMNSHO, at least
if you really intend to practice and carry with full power loads. (Though for CCW in .38 Special+P, one of the J-frames gets chosen.)
And at least for the present, the DA Ruger revolvers also have no stinkin' "lock", not to mention the greater strength and inherently stronger design (due to lack of sideplate) of the Rugers.
My own experience with both Smiths and Rugers is that they're not reliably "just right" out of the box, at least as bought within the last twenty years, and they both can often benefit from some judicious high-quality gunsmithing.
In my own case, I simply won't be buying
any S&W guns with locks, while I'll continue to buy Rugers as long as their QC doesn't get worse and as long as they stay lock-free.