Hi,

I am fairly new as well to the crypto's, but as you know there are a lot of coins circulating around and ofcourse there are a lot of coins that won't succeed and coins that will succeed. My suggestion would be to google as much as possible and do check out their website/projects on what they are creating. Also a lot of them have whitepapers, these are really helpful in understanding their project.
Only invest in coins/projects in which you believe.

Best potential from my point of view has to be ripple. Ripple connects banks, payment providers, digital asset exchanges and corporates via RippleNet to provide one frictionless experience to send money globally. Basically the currency addresses the need to keep money flowing freely.

There are more, but go out there and explore!

Good luck

Is it a question about wallet or about good coin? I am using Etherdelta and hold there Ethereum coins. Nowadays Ethereum is the best currency, much better than Bitcoin, Litecoin, Ripple or Bitcoin Cash.

The subject and the matter of the thread is not matching. What is your actual query? If you talk about the crypto currency price going down, then you must understand that it is the normal dynamics of crypto currency market. So there's nothing to worry about. Also the outlook of the market changes form day to day. So if a crypto coin looks good for invest, that may not be the case tomorrow. Take my example, I have bought ripple when the price was at $3 each. I had some money lying idle in the exchange so bought around 35 ripples hoping the price will go up. But if you look at the current market price of ripple, you will understand I have lost 60% of my investment value. Also ripple has come to the third position from the second and ETH took over the second position. So use your own intuition and invest accordingly and don't forget to diversify.