Investing in both Bitcoin and altcoins are very good idea. But before investing we have to aware about the best altcoins , which is good and long lasting. Because some coins are disable quickly after some time. There is no risk in investing bitcoin, because it a larger and well established cryptocurrency. Bitcoin is more safer and stable investment than altcoins. Before you invest in altcoins you have to check whether it is best coin to invest because some altcoins gives high profit returns but with higher risk. So choose best altcoins before invest.