I am not using any other crypto currency at the moment, but I don't think any of them will ever overtake bitcoin. Its the standard of all, its like money now, do you see money competing with anything else? I really don't see that. So I feel bitcoin will hold it own in the market and would probably keep growing.
In my opinion, yes because of bitcoin is most popular and most powerful coin in terms of currency all over the world. Bitcoin is have a huge value like gold. In short Bitcoin is no1 peroid.