If you are planning to invest for a good life saving, it's better if you invest in bitcoin because it's really good to have an investment like bitcoin and hold it for a long time because the longer you hold it, the higher the value it becomes.
Yeah bitcoin is the leading crypto in the world and the market cap and earnings ratio is higher than any other coin in the market. You can make big money in the near future, while other coins will take long time because of the low price and growth. But you should search and analyze the market thoroughly before investing your money in cryptocurrency and make sure it is good for you.