Ripple still has some growing room left, but meteoric rises like those seen at the end of 2017 will naturally be few and far between, and its safe to assume that the price changes will settle into more sustainable ranges. This is especially likely for a coin like Ripple which can benefit from price stability. With its large supply, and currently limited use, investors will want to be wary of readjustments following price rises. This is especially true for a coin like Ripple that benefits from stable pricing, and is designed more for corporate use than individual use. So I think XRP will be a good investment.