Any cryptocurrency according to me is going to have a good future. Definitely bitcoin will top that list. And we can definitely trust the top 10 cryptocurrencies. We have to understand that potential of a cryptocurrency is not determined based on how well it is traded in the market. At the same time we will not be able to say that just because a cryptocurrency is traded very well in the market, it will have a bright future. Though in a way it can work out, it need not necessarily be the mantra.
For example we will be able to read and understand that IoT is definitely going to be the future but the cryptocurrency MIOTA is not doing very great. So here we get two different perspectives. Though there is a bright future for a blockchain project, it doesn't really mean that the cryptocurrency will become the top crypto currency in the market.
I have invested a lot on Ripple expecting it to provide me good returns. There are few reasons why I invested on Ripple instead of other cryptocurrencies. The main expectation here for me is, when Bitcoin was emerging I missed the bus. I don't want to miss anything again in spite of understanding their potential.
If Bitcoin is floating around 7200 now, I would say it is a great opportunity for people who are planning to do a fresh investment. If they are lucky they will enjoy the fruit when the value reaches 8000 mark or 8500 mark. Whatever it is, we will need lots of patience.
I know I have not provided a convincing answer for you. But I have tried to provide you a perspective so that you can do your own analysis and stay self motivated. That's what most of the people here have been doing.