The best investment option involving Bitcoin is.... Bitcoin itself. Bitcoin was originally intended to be a currency. But nowadays, it is mostly behaving as an investment asset. And I would advice every one to stay out of the other Bitcoin-linked investment options, such as crypto-stocks. Most of these schemes are ponzis, run by conmen.
yes you may try it also, bitcoin is a good investment itself why? as time passes by, bitcoin continues to grow its value every year. The investors keeps on investing to bitcoins and through the years , bitcoin population grows a lot than expected more and more people are get interested to it.