Save the extra hundred for the Smith. Nothing wrong with the GP-100, its a sturdy gun that is generally rated even by Smith lovers as a close second to the 686, but this is the kind of gun that will long outlive you even if you neglect it. You're going to have it a long time and love it, so get the one you want. A case of cheap .38 range ammo will run you $80-100 and you'll shoot that up in NO time. You also gotta buy cleaning stuff, maybe a gun rug, holster, do you need a safe?, range lane rental time, those targets with the yellow die in them, ear protection, ammo, ammo, ammo, etc. In other words, it won't take you buying many more things or won't take many weeks or months until that $100 difference is far behind you and looks like nothing. Five years from now, after you've shot all those cases of ammo, the difference in price you see now on the sticker will be meaningless. Get the gun you want, and save if you have to. You'll be glad you did.