The ones that Mopar Matt posted work well, but they will cause severe line twist if you slide them a lot. Any of the ones with the holes in them recomend you wrap the line around the stop. If this is done it will cause the line to twist. I use the four hole kind with great success and no problems. I do not wrap mine. I simply thread the holes. Any of the stops on the market, as I've tried them all, will fail or start loosing integrety after awhile. Ifyou fish a couple of times with any of them and put the rod back up when you get it back out, it isn't going to be much good. It isn't rocket science to figure out the little tiny springs, strings, springs, plastic peices, etc. are might not make it through the day, but ecpecting them to work when they've been on your rod for a while is a little excessive. I've tried to find the best ones and I've settled for the plastic ones. I probably will never switch, I'm that satisfied, but finding what you are comfortable with will just take time. It may not be what works the best, but what your comfortable with. Good luck.
This only my opinion, but nothing you can say will change my mind. That makes it a FACT.
Today is a Blessed Day and a Prosperous Day