Oy...Not the internal lock debate....yawn....Buckle up - your choices of lock free new guns will be getting thinner and thinner...It's called "business survival".... My 642CT has the "dreaded" internal lock. I brought it home, stuck the key in the lock to play around with it, turned it to on, turned it to off, tossed the keys in the box and moved on with my life.
Not buying a firearm because of a totally unobtrusive safety feature does little to protest the circling lawyers and politicians who make these steps necessary, they just hurt business of folks on our team. The internal lock debate is a non-issue and not buying a Smith and Wesson solely because of the IL is patently silly....
Actualy adding extra links in the chain of components that must function unnecessarily for something that may be needed to save your life is just foolish.
Whether it is a magazine disconnect on an auto that can cause a perfectly functional firearm to not fire because of a slightly deformed or overly worn magazine, or the part that detects it, or whether it is extra moving parts for an internal lock, adding more links to the chain increases your chances of a failure. A chain is only as strong as its weakest link. When you add additional links that do not add something significant you are being foolish.
What are you going to do when future guns require a charged battery for the fingerprint ID chip to detect your finger to allow it to fire? Check the battery life? Make sure no wires come loose? Some criminal will just bypass the circuit anyways after they steal them, so it would only inconvenience legit owners. What about the fact that such things require a few miliseconds of processing speed which may seem like nothing but could be all the difference necessary to lose a gun battle? But hey it sounds like a great idea right? Like in that movie Judge Dredd with the DNA sampling done for every round!
Now lets come back to reality and realize a firearm is not a portable projectile launching vault that should require bells and whistles, batteries, multiple chains of seperate mechanisms or electronics and sensors that all need to be functioning for that one day after many years of possible neglect you might need to quickly use it to save your life. If you want the firearm harder for the wrong person to fire you put it in a lock box, a safe, or use an external object that interfers with its functioning but does not add additional things to go wrong with the firearm itself.
People are taking proven reliable designs that have gone through rugged abuse and still been able to function, and adding additional things to go wrong just to appease lawyers. Well I got news for people: A firearm should be viewed as dangerous at all times and treated as such. No amount of extra things that can potentialy hamper its functioning are going to change that.
When you need to use a firearm to save your life you want the shortest chain of mechanical events possible. Drop safe is important and a great advantage to a handgun. For that I welcome one extra unnecessary link in the chain of things to fail. If you tell me I should just accept other features that potentialy and unnecessarily endanger me and mine, and potential many other people faced with a life and death situation just because it makes you feel better or is easier to go along with than to fight, I say screw you and your product, and the fellow owners that are supposed to help fight such idiocy and choose to just let lawyers increase the cost and decrease the reliability of our arms.
As for the original poster, Ruger is much more durable. Smiths are generaly smoother and more precise. A gun enthusiast will generaly favor precision and good feel and performance over rugged durability so many opinions here will be biased. For purely rugged durability that will last the longest without requiring factory maintainence or replacement of parts go with the Ruger.
Just like a Mini-14 will generaly outlast most other .223 semi auto firearms, a GP100 should outlast most other .357 magnum handguns. That does not mean either will be the choice of gun enthusiasts that value other qualities as well that they are lacking, but it is still the facts.