Monero is awesome but I dont know why the prices keep going down. Litecoin is very potential too. Ethereum is still the best. Some other altcoins are undervalue and if you want to know more about it, you need to learn more about computer
Agree. Sometimes there are altcoins which are very promising but tend to decline in value over time. I guess that it would be that people hasn't realize the true potential of a specific coin, which they only view as a speculative tool.
Monero, has a very strong anonymity system, and in could become highly valuable if practical in every day transactions. In the other hand, ZCash was only released a few months ago and it is much morr valuable then XMR itself being the strong anonymous cryptocurrency among the rest like Dash. So in my point of view, the cryptocurrency markets are very strange, since people tend to pump some altcoins by pure hype and not be realizing the true potential that a specific coin has. Most of them don't care about the underlying tech or quality of development, there just into most of these anoncoins because of hype.
But in the end, I believe that the true value for these alts would reflected as time goes by. Nowadays there is a trend in Bitcoin's price where other altcoins are following. It would only be a matter of time before markets correct themselves and show the true value of these cryptocurrencies.
By the way, you could expect of Litecoin's price to skyrocket after SegWit adoption. It may become closer towards being used in the mainstream world. Just my opinion.
What are your arguments please? 
