Use a quality 1/8th chain such as KMC, as they will withstand the rigours of spinning the pedals on a descent and fit lockrings to the sprockets for the same reason. Otherwise the sprocket is likely to unscrew itself. If you have a flip-flop hub then you can fit a 15 tooth and 16 tooth sprocket and then see which is better suited to your style of riding by simply turning the wheel around.
Use a quality 1/8th chain such as KMC, as they will withstand the rigours of spinning the pedals on a descent and fit lockrings to the sprockets for the same reason. Otherwise the sprocket is likely to unscrew itself. If you have a flip-flop hub then you can fit a 15 tooth and 16 tooth sprocket and then see which is better suited to your style of riding by simply turning the wheel around.