David, the shutter on the 1N-RS may feel "a little plasticky", but it's guaranteed that beast (and shutter button) will be around even as long as the hallowed F-1 — if not longer. And, I guess you're learning to be careful not to put the drive in H and press the shutter button hard : very easy — too easy (and a great conversation starter if you dare bring the camera and sit it beside the Christmas turkey — to munch a roll in a couple of seconds or so — no time for a proverbial blink of the eye!