I recently sent a large regular into the spa. It was one I bought used a few years ago with some normal wear on the scales and I was very happy with it as is. I did notice that the screws would loosen up now and then, but no big deal. Then after about a year of nonstop EDC I was carrying it (closed) down the flight of stone steps that leads to my vegetable garden, getting ready to cut some lettuce or some similar thing. I lost my balance and slammed the hand with the Sebenza in it into the stone wall beside the steps to stop myself from falling. There ended up being two long gouges in the scales on one side. I was pretty sad about that, because I definitely prefer my Sebenzas original, but no way I was going to leave those scratches. I sent the knife in to the spa and not only did it come back beautifully refinished with no sign of the scratches or any dulling, etc, but there was a note saying they had replaced all the screws because they were showing signs of wear. The action and feel of the knife has never been better. So I guess that's a long way of saying, no Spa Treatment is better, but the Spa is great to have when you really need it.