I think we don't need any other coin Only if it's really really different....You can choose 175 currencies on coinmarketcap
My best choice:- bitcoin
I think this market caps getting bigger:- cryptogenic bullion
- app-coin
- fedoracoin / tips
- dogecoin
app-coin, maybe
fedoracoin will not succeed
dogecoin will not succeed
Bitcoin is the most used coin so far simply because it's the first successfully cryptocurrency, but surely, you realize it has many flaws, very long transaction times(what commercial retailer would wait 40 minutes to make sure you sent them Bitcoin in exchange for a good? None), and the market cap of only 21 million coins has made us come up with unpopular percentages of Bitcoin, such as .0001, millibit etc etc. Most people want a coin that can be divided up, but not to the ridiculous extent Bitcoin is.