Coil spring vs. leaf. pro's, coil springs are more durable, and easier to mass produce., con's, leaf springs can be made to produce a more linear feel (ie. no stacking or increase of resistance over travel) and provide a faster lock time. The most expensive hand made firearms still use leaf springs due to their greater accuracy potential, and ussually include a spare
Casting (as ruger does it for frames) vs machined, Mechanical difference less than 1%, ruger could cast barrels if they wanted to, it's not as economical as the traditional method.
Grip mounting? either style you could beat a yak to death with and not harm the gun, who cares? It's personal taste. I'm a smith fan but I've always like the look and feel of the grips on the gp series, and they cushion recoil very well, I really prefer them over the straight black grips on my 629 and 625.
Balance/feel? personal again, I prefer smith, but don't mind the gp's with a
4" barrel, longer they feel kinda clublike to me, but they are stronger than any smith made with the possible exception of the new X frames...
Your going to have a good handgun with either. If i had to pick one to last the rest of my life in the wild it would be the ruger. It's a tougher design. But the smith is a smoother one, and easier to shoot acurately and hold their value better. If I was going to buy a ruger, I'd have to look at taurus too, and i'd probably buy one of them instead....
